CSS Preparation Of Math

13/08/2023

13/08/2023

Find the number of digits in the square root of 28561 ( perfect square)
a)5
b)3
c)4
d)6
Hint: n/2 if n is even
(n+1)/2 if n is odd
Where n is the no. Of digits in perfect square

13/08/2023

Age of the sister is twice the age of brother. 3 years back sister's age was three times of brother. How old they are both now?
a)8, 16
b)6, 12
c)9, 18
d)non of these
Hint: brother's age= x, sister's age= 2x
3 years back= x-3, 3 years back=2x-3
x-3 =(2x-3)/3 according to given

13/08/2023

What is the percentage profit if a motorcycle is bought for RS. 50000 and sold at RS. 56000
a)15%
b)12%
c)16%
d)14%
Hint: x%50000=56000-50000

13/08/2023

What was the original price of radio that sold for $70 during a 20% off sale?
a)$84
b)$87.50
c)$92
d)$56
Hint: y-20%y=70

13/08/2023

What percent of 10/3 is 5/3
a)20
b)50
c)60
d)80
Hint: x%×10/3=5/3

13/08/2023

What will be 60% of number, whose 80% is 320
a)240
b)450
c)500
d)600
Hint: 80%×y=320
and 60%y=?