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Let the three numbers be 2x, 3x and 4x, respectively. ATQ; (2x) 2 + (3x) 2 + (4x) 2 = 2349 Or, 4x2 + 9x2 + 16x2 = 2349 Or, 29x2 = 2349 Or, x2 = 81 So, x = 9 (Since, numbers are positive therefore we can discard the negative root) So, required average = {(3 x 9) + (4 x 9)} ÷ 2 = (63/2) = 31.5 Hence, option c.
Find the GCD of 1.08, 0.36 and 0.9.
If the sum of 2 numbers is 185, their LCM is 1700 and HCF is 5. Then the difference between 2 numbers is:
The H.C.F of two numbers is 3 and their L.C.M is 782. If one of the numbers is 34, find the other?
Find difference between the LCM and HCF of 14, 42 and 77.
The product of two numbers is 216 and their HCF is 6. What is the LCM of the numbers?
Find the smallest 3-digit number that leaves 2 as remainder when divided by 6, 4 and 7.
What is the difference between the LCM and HCF of 36, 40?
The HCF and LCM of two natural numbers are 14 and 66, respectively. What is the difference between the two numbers, if one of the numbers is 28?