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Agam answered 11 month(s) , 26 day(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

...

Apr 14

• 27 Likes
• 112862 Views

Apr 14

Yuvraj answered 10 month(s) , 10 day(s) ago

What is the fullform of CPCT?

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

Sep 18

• 26 Likes
• 90575 Views

Sep 18

Syeda answered 1 year(s) , 1 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.
...

Dec 8

• 8 Likes
• 38032 Views

Dec 8

Syeda answered 1 year(s) , 1 month(s) ago

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

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.
Hence (x + 3)/...

Aug 4

• 7 Likes
• 29045 Views

Aug 4

Kishore answered 4 year(s) , 9 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...

Oct 28

• 2 Likes
• 24004 Views

Oct 28

Syeda answered 1 year(s) , 1 month(s) ago

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

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

...

Jan 5

• 1 Like
• 23069 Views

Jan 5

Agam answered 11 month(s) , 21 day(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...

Nov 10

• 6 Likes
• 22098 Views

Nov 10

Syeda answered 1 year(s) , 1 month(s) ago

Construct a rhombus of diagonals 6.4 and 5.2

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
...

Aug 11

• 1 Like
• 21044 Views

Aug 11

Rajan Raman answered 3 year(s) , 9 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.
...

Nov 3

• 0 Like
• 20034 Views

Nov 3

Syeda answered 1 year(s) , 1 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...

Aug 3

• 4 Likes
• 19605 Views

Aug 3

Syeda answered 1 year(s) , 1 month(s) ago

How to construct a 15 degree angle with a compass?

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

Aug 28

• 2 Likes
• 19293 Views

Aug 28

Syeda answered 1 year(s) , 1 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...

Oct 16

• 0 Like
• 16626 Views

Oct 16

Agam answered 9 month(s) , 2 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
...

Jul 30

• 0 Like
• 16390 Views

Jul 30

Syeda answered 1 year(s) , 2 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...

May 29

• 3 Likes
• 16300 Views

May 29

Ramesh answered 3 year(s) , 9 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-...

Oct 16

• 1 Like
• 15448 Views

Oct 16

Ramesh answered 3 year(s) , 10 month(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...

Sep 26

• 1 Like
• 15425 Views

Sep 26

Kishore answered 5 year(s) , 1 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...

Jul 9

• 5 Likes
• 15205 Views

Jul 9

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

Give 5 rational number between -5/6 and 7/8

5 rational number between -5/6 and 7/8 are : Taking LCM of denominator and multiplying the numbers with LCM we get :
-20/24 and 21/24 now 5 rational between between  -20/24 and 21/24 are
-19/24,...

Jun 10

• 0 Like
• 14957 Views

Jun 10

Agam answered 11 month(s) , 22 day(s) ago

Find the cube root using the estimation method.

3)

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

Jan 14

• 1 Like
• 14655 Views

Jan 14

Syeda answered 1 year(s) , 1 month(s) ago

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

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...

Oct 15

• 0 Like
• 14474 Views

Oct 15

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