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Question & Answer Forum

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Agam answered 1 year(s) , 2 month(s) ago

Least number to be added to make to make it a perfect square

Q1 find the least number which must be added to 7900 to obtain a perfect square?

Solution:

First let us find the square of 7900 using long division method.

The remainder is

...

Asked by Harshaditya

Apr 14

  • 18 Answers
  • 29 Likes
  • 123927 Views
Yuvraj answered 1 year(s) ago

What is the fullform of CPCT?

Sol:
The full form of CPCT is Corresponding parts of Congruent Triangles.

Asked by Sunil

Sep 18

  • 8 Answers
  • 27 Likes
  • 100957 Views
Syeda answered 1 year(s) , 4 month(s) ago

please suggest a good poem for my hindi recitation competition

select a poem on world with trees and greenery and compare with world without it. i recited such a poem and got the first prize for it. you can go for it to and make sure you give your best expressions.
...

Asked by Srija

Dec 8

  • 31 Answers
  • 8 Likes
  • 41437 Views
Syeda answered 1 year(s) , 4 month(s) ago

In a fraction, twice the numerator is 2 more than the denominator.

Answer.

Let the numerator be x
Denominator = 2x − 2
Therefore the fraction = x/2x − 2
Given when 3 is added to both the numerator and denominator, the fraction becomes 2/3.

...

Asked by Upender

Aug 4

  • 3 Answers
  • 7 Likes
  • 34000 Views
Kishore answered 4 year(s) , 11 month(s) ago

Sum of the digits of a 2 digit number is 9

Assume the digit in ones place as x and the digit in tens place is y
The original number is (10y + x)
Number obtained by reversing the digits = (10x + y)
Now check for the condition...

Asked by Nahan

Oct 28

  • 1 Answer
  • 2 Likes
  • 27699 Views
Agam answered 1 year(s) , 1 month(s) ago

1200 soldiers in a fort had enough food for 28 days.

Given that 1200 soldiers in a fort had enough food for 28 days
Let the number of soldiers transferred to another fort be x
After 4 days, number of soldiers = (1200 – x)
Given that food l...

Asked by Gurnoor kaur

Nov 10

  • 5 Answers
  • 6 Likes
  • 25346 Views
Syeda answered 1 year(s) , 4 month(s) ago

Construct a rhombus of diagonals 6.4 and 5.2

Answer.

Let the given diagonals be AC = 5.2 cm and BD = 6.4 cm
Rough sketch:

Steps of Construction:

  • Draw a line segment AC = 5
...

Asked by Sheron

Aug 11

  • 2 Answers
  • 2 Likes
  • 24764 Views
Syeda answered 1 year(s) , 4 month(s) ago

areas of 3 adjacent faces of a cuboid are x,y,z

Answer.

Let the sides of the cuboid be a, b and c.
Given x, y and z are areas of three adjacent faces of the cuboid
Hence x=ab,  y=bc, z=ca
(x)(y)(z) = (ab)(bc)(ca)
x

...

  • 2 Answers
  • 1 Like
  • 24542 Views
Rajan Raman answered 3 year(s) , 11 month(s) ago

Find the least perfect square number?

LCM (3, 4, 5, 6 ,8) = 120

120 = 2 x 2 x 2 x 3 x 5.

As 2,3 and 5 are not in pair in LCM’s factor so we need to multiply 120 by 5 and 3,2 to make it a perfect square.
...

Asked by Anuj

Nov 3

  • 2 Answers
  • 0 Like
  • 24225 Views
Syeda answered 1 year(s) , 4 month(s) ago

Five years ago a man was seven times as old as his son. Five years hence, the father will be three times as old as his son. Find their present ages.

Dear friend,
Let the past age of son = x
Let the past age of father = 7x
So,
Present ages are x+5 and 7x+5
Future age of son = x+10
Future age of father = 7x+10...

Asked by Astha

May 29

  • 2 Answers
  • 3 Likes
  • 23712 Views
Syeda answered 1 year(s) , 4 month(s) ago

Hasan buys two kinds of cloth materials for school uniforms , shirt material

Let the cloth purchased by Hasan for trousers be 2x m
Cloth purchased by Hasan for shirt material be x m
Given price of trouser material at the rate of Rs.80/m = 2x × 80 = 180x...

Asked by Alana

Aug 3

  • 3 Answers
  • 4 Likes
  • 22800 Views
Syeda answered 1 year(s) , 4 month(s) ago

How to construct a 15 degree angle with a compass?

Answer.

  1. First construct 60° angle
  2. Bisect 60° angle to get 30°
  3. Lastly again bisect 30° angle to get 15°

Asked by Maria

Aug 28

  • 3 Answers
  • 2 Likes
  • 21261 Views
Kishore answered 5 year(s) , 3 month(s) ago

a sum of 500 is in the form of denominations of 5 and 10.if the total number of notes is 90 find the number of notes of each denomination.

Let the number of Rs 5 notes be x
Hence the number of Rs 10 notes be (90 − x)
Total sum of money = Rs 500
∴ 5x + 10 (90 − x) = 500
5x + 900 − 10x = 500
 − 5x = 500 − 900...

Asked by Leela

Jul 9

  • 1 Answer
  • 5 Likes
  • 20432 Views
Agam answered 11 month(s) , 9 day(s) ago

Construct a square each of whose diagonals measures 4.8 cm



Steps for Constructions:

  • Draw a line segment AC = 4.8 cm length
  • Now draw perpendicular bisector of AC. Let it intersect AC at point O.
  • With O
...

Asked by Harshaditya

Jul 30

  • 3 Answers
  • 0 Like
  • 19813 Views
Syeda answered 1 year(s) , 4 month(s) ago

Find the number of voters enrolled on the voter list.

Sol:
Percentage of votes polled for winning candidate = 54%
Percentage of votes polled for defeated candidate = 46%
Percentage majority = 54 - 46 = 8%

Let the number of v...

Asked by Ananya

Oct 16

  • 2 Answers
  • 0 Like
  • 19256 Views
Ramesh answered 3 year(s) ago

Find the interest and amount.

Sol:
Principal = Rs 4000
Time = 4/3 years
Rate of interest = 2 paise per rupee per month
                       = 0.02 Rs per rupee per month
                       = Rs...

Asked by Ananya

Sep 26

  • 1 Answer
  • 1 Like
  • 18496 Views
Raghunath answered 3 year(s) , 7 month(s) ago

Find the compound interest on Rs 4000 for 2.5 years at 10% per annum.

Principal(P)  = Rs 4000

Rate of Interest(r )  = 10%

Time = 2.5 years

Here first we take n = 2 years.

A = P( 1 + r /100)n  Where  A = Amount  and n = number of

...

Asked by Manish

Feb 18

  • 1 Answer
  • 5 Likes
  • 18390 Views
Ramesh answered 3 year(s) , 11 month(s) ago

Find the length of the altitude corresponding to the largest side.

Sol:
Sides of the triangle,
a = 20 cm, b = 21 cm, c = 29 cm

S = (a + b + c) / 2
   = (20 + 21 + 29) / 2
   = 35

Area of the triangle = √[s(s-a)(s-...

Asked by Ananya

Oct 16

  • 1 Answer
  • 1 Like
  • 18127 Views
Agam answered 1 year(s) , 1 month(s) ago

Find the cube root using the estimation method.

3)

A = 75
A +D = 180
D = 105 = B
A=C=75

  • 2 Answers
  • 1 Like
  • 17939 Views
Syeda answered 1 year(s) , 4 month(s) ago

A sum of money is borrowed and paid back in 2 annual intallments

Answer.

    Present worth of Rs. P due in n years is given by
Present worth =
Therefore, Principal = (Present worth of Rs. 882 due 1 year hence) + (Present worth of Rs. 882 due 2...

Asked by Shrey

Oct 15

  • 2 Answers
  • 0 Like
  • 16990 Views
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