The average age of seven boys sitting in a row facing North is 26 years. If the average age of first three boys is 19 years and the average age of last three boys is 32 years, what is the age of the b
A). 28 years
B). 29 years
C). 30 years
D). 31 years
29 years
Age of the fourth boy
= (26 x 7 - 3 x 19 - 3 x 32) years
= (182 - 57 - 96) years
= 29 years
3. Product of three consecutive odd numbers is 1287. What is the largest of the three numbers?
5. What least number must be added to 750 so that the sum is completely divisible by 59?
8. In how many different ways can the letters of the word TEST' be arranged ?
9. What is the largest 4-digit number that is exactly divisible by 93?