Question

The average of first two numbers and last two numbers of

Q: Answer-The average of first two numbers and last two numbers of a set of six numbers is 70 and 45 respectiv...

Let the six numbers be a, b, c, d, e, f. a b 2 70 140 ....................... i e f 2 45 90 ........................ ii a b c d e f 6 65 390 ........................iii We get the sum of third and fourth digit by subtracting i and ii from iii a b c d e f a b e - f 390 140 90 160 c d 160 Required average 80