H.C.F. & L.C.M. of Numbers

H.C.F. & L.C.M. of Numbers Worksheet-4

1. 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

2. The L.C.M. of three different numbers is 120. Which of the following cannot be their H.C.F. ?

(a) 8                    (b) 12                  (c) 24                  (d) 35

H.C.F. & L.C.M. of Numbers Worksheet-5

1. The greatest number which can divide 1356, 1868 and 2764 leaving the same remainder 12 in each case, is :

(a) 64                  (b) 124                (c) 156                (d) 260

2. The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is :

(a) 123                (b) 127                (c) 235                (d) 305

H.C.F. & L.C.M. of Numbers Worksheet-6

1. The least number which when increased by 5 is divisible by each one of 24, 32, 36 and 54, is :

(a) 427               (b) 859               (c) 869               (d) 4320

2. The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8, is:

(a) 504               (b) 536               (c) 544                (d) 548