The word 'COMPUTER' has 8 different letters. When the vowels OUE are always together, they can be supposed to form one letter. Then, we have to arrange the letters CMPTR (OUE). Now, 6 (5 + 1 = 6) letters can be arranged in 6! = 720 ways. The vowels (OUE) can be arranged among themselves in 3! = 6 ways. Required number of ways = (720 x 6) = 4320
The ratio of Rama’s to Shyama’s age is 1 : 2 and the sum of their age 81 years. What will be the ratio of their ages after 7 years?
If 3 years is subtracted from the present age of R and the remainder is divided by 9, then the present age of his grandson A is obtained. If A is 4 yea...
A is younger than B by 4 years. If the ratio of A and B ages is 5:7 respectively, then find the age of A.
The ratio of the present ages of father and his son is 7:5. The product of their ages 3 years ago was 32 times of his son’s age that year. What was so...
Sum of the present ages of A, B, C and D is 60 years. After 2 years ratio of their ages is 6:5:2:4. What is C’s present age?
Laxman and his grandmother's current average age is 38 years. Four years from now, Laxman's age will be one-third of his grandmother's current age. Dete...
A man invested a sum of Rs. 25,000. He invested some part at 5% p.a. and remaining at 5.5% p.a.
How much money did he invest at 5% p.a.?
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The total age of A, B and C four years hence will be 80 years. Find the age of C four years hence, if the present age of A and B is 33 years and 20 year...
The average age of 26 smdents in a class is 15 years. If teacher's age is included in it, then the average will increase by one. What is the teacher's ...
Ratio of present ages of A and B is 5:7, respectively. C who is 9 years older than A will become 36 years older after 12 years. Find the present age of B.
