252 can be expressed as a product of primes as.
2 x 2 x 3 x 3 x 7
2 x 2 x 2 x 3 x 7
3 x 3 x 3 x 3 x 7
2 x 3 x 3 x 3 x 7
Find the LCM of 30 and 45 using multiples method.
45
30
90
15
The ratio of two numbers is 3 : 4 and their H.C.F is 4. Their L.C.M is
12
16
24
48
Find the HCF of 30 and 40 using division method.
2
5
10
Three numbers are in the ratio 3 : 4: 5 and their LCM is 2400. Their HCF is
40
80
120
200
A, B and c, start at the same time in the same direction to run around a circulr stadium. A completes a round in 252 second, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they again at the starting point?
26 minutes and 18 seconds
42 minutes and 36 seconds
45 minutes
46 minutes and 12 seconds
Product of two numbers is equal to
The product of their H.C.F and L.C.M
The quotient of their H.C.F and L.C.M
The sum of their H.C.F and L.C.M
The difference of their H.C.F and L.C.M
Find the H.C.F of 24 and 76 using rule of divisibility
3
4
6
The HCF of two numbers is 23 and the other two factors of their LCM are 13 and 14. The larger of the two numbers is
276
299
322
345
The HCF of two numbers is 11 and their L.C.M is 7700. If one of the numbers is 275, then the other is :
279
283
308
318