Math

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Hello. I am trying to help out my sister and find patterns in numbers....

Ex/ 1+2
2+2
3+2
4+2

My question is... I can't figure out what the pattern is in the following set...

1 goes to 4
2 goes to 7
3 goes to 10
and 4 goes to 13......

I initially thought that it was 3x + 2 but it does not work for the third. Can you help?

  • Math -

    1 + 3 = 4
    2 + 5 = 7
    3 + 7 = 10
    4 + 9 = 13
    5 + ? = 16

    You might show her with subtraction:
    4 - 1 = ?
    7 - 2 = ?

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