Which of the following is a pair of co-primes?

More Questions from Problems on H.C.F and L.C.M

• H.C.F . of 2 3, 3 2 and 15 is?
• H.C.F of 42, 63 and 140 is?
• H.C.F of 1/2, 2/3, 3/4, 4/5 is?
• H.C.F. of 1485 and 4356 is?
• The largest number , which exactly divides 210, 315, 147 and 168 is?
• The H.C.F of two numbers is 12 and their difference is also 12. The number are?
• H.C.F of three numbers is 12. If they be in the ratio 1: 2: 3, the numbers are?
• L. C . M of 2/7, 3/14 and 5/ 3 is?
• Which of the fractions 1/2, 3/7, 3/5, 4/9 is the smallest?
• Which of the following is in descending order?

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