What is the sixtieth term in the following sequence? 1, 2, 4, 7, 11, 16, 22...
(A) 1,671
(B) 1,760
(C) 1,761
(D) 1,771
(E) 1,821
(A) 1,671
(B) 1,760
(C) 1,761
(D) 1,771
(E) 1,821
Every term increases in the following patternpraveen_gmat wrote:What is the sixtieth term in the following sequence? 1, 2, 4, 7, 11, 16, 22...
(A) 1,671
(B) 1,760
(C) 1,761
(D) 1,771
(E) 1,821
1 2 4 7 11 16
First diff = 1
2nd diff = 2
3rd diff = 3 and so on
to find the sixtieth term,just find the sum of the numbers increasing by differences + 1
for example,In the sequence provided 5th tem is 11
to get this we take sum of first four natural numbers which is 10 + 1 =11
similiarly to find 60th term take sum of 59 natural numbers + 1 =1771
Pick D
