Question

There are two consecutive odd numbers such that twice the smaller number plus one is ten more than the greater number. What is the smaller number?
7
9
11
13

Answer 1

check

Answer 2

\[2*7=14\] no, since 14 is not ten more than 9

Answer 3

\[2\times 9=18\] nope

Answer 4

\[2\times 11=22\]

Answer 5

a,b is the number for odd number is 2n-1
a is 2n-1 and b is 2(n+1)-1
2a+1=10+b
so n=6 hence a=11 b=13

Answer 6

add 1 get 23. so that is the one!

Answer 7

so 11