Question

21,34,55,a,144,b,377,610. (a,b)=

Answer 1

Answer:

21+34=55+34=89=a 89+55=144+89=233=b 233+144=377+233=610

Answer 2

The answer will be (a,b) = (89,233)

Step-by-step explanation:

Given series , 21,34,55,a,144,b,377,610

Adding 1st and 2nd term, 21 + 34 = 55

On adding 1st and 2nd terms we get the 3rd terms

Thus the series is of pattern that the addition of 2 consecutive terms gives the succeeding number.

Thus on adding 2nd and 3rd terms we will get the 4th term

∴ 34 + 55 = a

∴ a = 89

In the same way on adding 4th and 5th terms we get the 6th term

∴ a + 144 = b

89 + 144 = b

∴ b = 233

Hence (a,b) = (89,233)