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Permutations And Combinations
Question
Find the sum of the products of the corresponding terms of sequences 2, 4, 8, 16, 32 and 128, 32, 8, 2, 
Solution
If we multiply the corresponding terms of given two sequences, we get 2 (128), 4 (32), 8(8), 16(2), 32
or 256, 128, 64, 32, 16 which is a G.P. with a = 256, 
, n =5.
∴ 
Some More Questions From Permutations and Combinations Chapter
Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.
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Mock Test Series
Mock Test Series