Question

which of the following statements is (are) true for all positive integers.
2+2^2+2^3+...+2^n=2^n+^1-2
1+3+5+...+n=n^3
a.both statements are true
b.none are true
.c only the first is true
d.only the second one is true

Answer 1

frist is true for sure
second may not be

Answer 2

it will be done through arithmetic mean

Answer 3

so maybe the answer is c

Answer 4

yeah ! i m also nt sure:/

Answer 5

@lgbasallote am i right???

Answer 6

yeah the answer was c

Answer 7

isnt this mathematical induction?

Answer 8

thank you guys for the help

Answer 9

sir ! i don't know about mathematical induction:)

Answer 10

yeah answer is c