A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B?

• O7
• 8
• 9
• 10
• 11

The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be:

• 12
• 14
• 18
• 20

Sachin is younger than Rahul by 7 years. If their ages are in the respective ratio of 7 : 9, how old is Sachin?

• 16
• 18
• 28
• 24.5

A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?

• 32
• 36
• 40
• 48

The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age will be twice that of his son. The ratio of their present ages is: 5 : 2 7 : 3 9 : 2 13 : 4

• 5:2
• 7:3
• 9:2
• 13:4

Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed?

• 210
• 1050
• 25200
• 1500

In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?

• 266
• 5040
• 11760
• 86400

In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?

• 32
• 48
• 36
• 60
• 120

In how many different ways can the letters of the word 'MATHEMATICS' be arranged so that the vowels always come together?

• 10080
• 4989600
• 120960
• none of these

In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?

• 120
• 720
• 4320
• 2160