The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is_________?
A. 123
B. 127
C. 235
D. 305
Basic Arithmetic
LCM of two numbers is 138. But their (Greatest common divisor) GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?
A. 46
B. 138
C. 69
D. 23
The least number of four digits which is divisible by 15, 25, 40 and 75 is_________?
A. 9000
B. 9400
C. 9600
D. 9800
Explanation:
The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
A. 3
B. 13
C. 23
D. 33
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?
A. 26 min 18 sec
B. 42 min 36 sec
C. 45 min
D. 46 min 12 sec
Greatest Common Divisor of two numbers is 8 while their Least Common Multiple is 144. Find the other number if one number is 16.
A. 108
B. 96
C. 72
D. 36
Product of two co-prime numbers is 117. Their L.C.M should be__________?
A. 1
B. 117
C. equal to their H.C.F
D. Cannot be calculated
Which of the following fractions is the largest?
A. 7/8
B. 13/16
C. 31/40
D. 63/80
What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?
A. 196
B. 630
C. 1260
D. 2520
The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is_________?
A. 30/7
B. 30/98
C. 60/147
D. 50/294