Question

Please help with maths

Answer 1

Let’s say n=4
2(4)+1=9

(i) N can be an odd or an even number but still come out to an even number when multiplied by 2 since 2 is even. However, since an odd number is added to these positive numbers, they will result in an odd number. Therefore, 2n+1 is an odd number.

(ii)(a) 2(1)+1=3, so the next odd number is 5, so we write 2(2)+1=5

(ii)(b) Let’s use 3 and 5 since consecutive means following one another.

3+5=8 Which is the same as 4(2)=8
We can also use 9+11=20 which is the same as 4(5)