Problems on Numbers
1. The sum of two numbers is 50, and their difference is 10. What are the numbers?
A. 25, 35
B. 15, 35
C. 10, 40
D. 20, 30
D. 20, 30
2. The product of two consecutive even numbers is 168. Find the numbers.
A. 10 and 12
B. 12 and 14
C. 14 and 16
D. 16 and 18
B. 12 and 14
3. The difference between a number and its three-fifth is 50. Find the number.
A. 100
B. 120
C. 125
D. 250
C. 125
4. Find the greatest number that divides 63, 105, and 147 exactly.
A. 7
B. 14
C. 21
D. 28
C. 21
5. The sum of digits of a two-digit number is 9. If the number obtained by reversing its digits is 27 more than the original number, find the number.
A. 27
B. 36
C. 45
D. 54
B. 36
6. The LCM and HCF of two numbers are 84 and 12 respectively. If one number is 24, find the other.
A. 36
B. 42
C. 48
D. 54
B. 42
7. Find the smallest number which, when divided by 35, 56, and 91, leaves the same remainder.
A. 630
B. 3640
C. 3641
D. 770
B. 3640
8. The sum of three consecutive odd numbers is 81. Find the numbers.
A. 25, 27, 29
B. 23, 25, 27
C. 27, 29, 31
D. 29, 31, 33
A. 25, 27, 29
9. Find the number which when decreased by 17 gives a number equal to 60% of itself.
A. 42
B. 42.5
C. 43.5
D. 44.5
B. 42.5
10. If 3 times a number is increased by 11, the result is 50. Find the number.
A. 11
B. 12
C. 13
D. 14
C. 13