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Problems on H.C.F and L.C.M

If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:

A.55/601

B.601/55

C.11/120

D.120/11

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

The H.C.F. of 9/10 , 12/25 , 18/35 and  21/40 is:

A.3/5

B.252/5

C.3/1400

D.63/700

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is:

A.28

B.32

C.40

D.64

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

Which of the following has the most number of divisors______?

A.99

B.101

C.176

D.182

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

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

A.123

B.127

C.235

D.305

Show Answer

Answer=Option B

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

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

Show Answer

Answer=Option D

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

Which of the following fraction is the largest ______?

A.7/8

B.13/16

C.31/40

D.63/80

Show Answer

Answer=Option A

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

Find the highest common factor of 36 and 84.

A.4

B.6

C.12

D.18

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:

A.75

B.81

C.85

D.89

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment

The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is:

A.15 cm

B.25 cm

C.35 cm

D.42 cm

Show Answer

Answer=Option C

Categories Aptitude Mcqs, Problems on H.C.F and L.C.M Leave a comment
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