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The 100th pyramidal number is 338,350. that would make quite a stack of basketballs! What number must you add to get 338,350 to the 101st pyramidal number?
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The 100th pyramidal number is 338,350. that would make quite a stack of basketballs! What number must you add to get 338,350 to the 101st pyramidal number?

User SqueezyMo
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1 Answer

2 votes
lets look a pyramid numbers
we have
1st=1
2nd=2
3rd=6
we notice that we jsut add the previous number on
so 1st=1
2nd=1+1
3rd=1+2+3
4th=1+2+3+4
so therefor to get from 100th to 101th, just add 101
User Flion
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