Question
In how many ways can 2 girls and 8 boys be seated in a
row so that girls are always together?Solution
Sol. Required number of ways = 2! × 9! = 2 × 362880 = 725760
Evaluate 3.2 × 2.5 + 1.5 × 1.2 and express the answer as a fraction.
A man distributed some candies to his three sons A, B and C. A, being the eldest got two times the number of candies that C got while A and B together...
The value of
If numerator of a fraction is decreased by 30% and the denominator of the same fraction is increased by 40%, then what fraction of the old is the new fr...
Simplify: 3/4 + 5/6
Evaluate: 180 ÷ (6 × 5) + 7 × 3 − 8
Which fraction bears the same ratio to 1/27 as 3/11 does to 4/9?
If the numerator of a fraction is increased by 25% and the denominator is decreased by 10%, the value of the new fraction 25/24, Find the original faction.