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Co-prime numbers are the ones whose HCF is 1. The possible number of pairs of ‘A’ and ‘B’, such that, ‘A’ and ‘B’ are co-prime = 2k – 1 Where, ‘k’ is the number of prime factors of the product. 350 = 21 × 52 × 71 So, the number of prime factors of 350 = k = 3 So, the possible number of pairs of ‘A’ and ‘B’, such that they are co-prime = 23 – 1 = 22 = 4
HCF and LCM of two positive numbers are 24 and 144. If one number is 50% more than the other number, then find the sum of both numbers
Find the total number of Prime factor in the given expression?
315× 56× 68
The LCM of two numbers is 40 times its HCF. If the product of the numbers is 1440, find their HCF.
Two numbers are in the ratio 3:5. The product of their H.C.F. and L.C.M. is 3375. The sum of the numbers is:
The HCF of two numbers is 21. Which of the following can never be their LCM?
Find the smallest two-digit number that leaves 4 as remainder when divided by 6 and 7.
The least number which when divided by 16, 32 and 48 leave remainder 4, 20 and 36 respectively is?
Let N be the greatest number that will divide 72, 105, 138 leaving the same remainder in each case. Then sum of the digits in N is: