MBA Exam

(a,b)is an ordered pair such that a, b are two two digit numbers. when a interchange it's digit becomes b.How many ordered pair are there such that (a+b) is a perfect square ?

1) 4
2) 8
3) 3
4) none of these

Read Solution (Total 1)

1) 4
Ordered pair are (29,92) (38,83) (47,74) (56,65)
When these paired number are added sum=121, which is perfect square.
11 years agoHelpfull: Yes(1) No(0)

MBA Other Question

A red light flashes 3 times per minute and a green light flashes 5 times in 2 minutes at regular intervals. If both lights start flashing at the same time, how many times do they flash together in each hour?

1) 30
2) 24
3) 20
4) 60
A packet of toffees is distributed in a class. A child who receives one-eighth of the total number of
toffees gets five times the average number of toffees received by the remaining children in the class.
What is the strength of the class?

1) 40
2) 36
3) 35
4) 34