TCS Company Numerical Ability Age Problem

What is the 30th number in the series 1,2,4,7,11,16...

Read Solution (Total 6)

Formula ;- n(n-1)/2 + 1
Answer -> 436
5 years agoHelpfull: Yes(13) No(4)

436
ans:
1+sum of first 29 terms
=1+29*(29+1)/2=436
5 years agoHelpfull: Yes(7) No(1)
22
1+1=2 2+2=4 4+3=7 7+4=11 11+5=16 16+6=22
5 years agoHelpfull: Yes(2) No(3)
answer is 497.
5 years agoHelpfull: Yes(1) No(4)
Answer is 59.
5 years agoHelpfull: Yes(1) No(4)
formula is n(n-1)/2+1.
Here n is 30.
result=(30*31)/2+1=930/2+1=435+1=436.
4 years agoHelpfull: Yes(1) No(0)

TCS Other Question

IF X IS ADDED TO BOTH NUMENATOR AND DENOMINATOR IN FRACTION 2/3 AND 20/3,THEN FRACTION BECOME EQUAL.THE FACTOR OF X IS?? In how many ways coin of 1 rupee and 2 rupee is arranged to get a value of 100 rupee? (Example for 5 rupee we can arrange it in 3 ways {(1,1,1,1,1) (1,1,1,2)(1,2,2)}