Q. If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
1) 2:5
2) 3:7
3) 5:3
4) 7:3
Q. The total age of Mamta, Anita and Kavita is 51 years. What was their average age five years ago?
1) 12 years
2) 14 years
3) 17 years
4) 16 years
Q. What percentage of numbers from 1 to 70 have squares that end in the digit 1?
1) 1
2) 14
3) 20
4) 21
Q. The LCM of numbers 12, 18, & 24 is how much more than their HCF?
1) 66
2) 69
3) 70
4) 72
Q. The average of first five prime numbers is
1) .5.40
2) .5.70
3) .5.60
4) 5.80
Q. The average weight of 8 men is increased by 1.5 kg when one of them who weighs 65 kg is replaced by a new man. The weight of the new man is
1) .76 kg
2) .76.5 kg
3) .76.7 kg
4) 77 kg
Q. The average of seven results is 5; the average of first three is 3, and that of the last three is 7. The fourth result is
1) 6
2) 5
3) 4
4) 3
Q. The average of 10 numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is
1) 7
2) 19
3) . 82
4) 84
Q. The average age of 30 students is 9 years. If the age of their teacher is included, it becomes 10 years. The age of the teacher is
1) 27 years
2) . 31 years
3) 35 years
4) 40 years
Q. The average of four consecutive even numbers is 27. The largest of these numbers is
1) 36
2) 32
3) 30
4) 28
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