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iGCSE (2021 Edition)

9.07 Binomial expansion

Interactive practice questions

The 4th row of Pascal’s triangle consists of the numbers $1,4,6,4,1$1,4,6,4,1. Write down the numbers in the 5th row of Pascal’s triangle in the correct order.

Easy
< 1min

Find the sum of the entries in the $5$5th row of Pascal’s triangle.

Easy
< 1min

You are given some of the entries in a particular row of Pascal’s triangle. Fill in the missing entries.

Easy
< 1min

Which row of Pascal’s triangle would give us the coefficients of terms in the expansion of $\left(x+y\right)^7$(x+y)7?

Easy
< 1min
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Outcomes

0606C12.1

Use the Binomial Theorem for expansion of (a + b)^n for positive integer n.

0606C12.2

Use the general term (n r) =a^(n-r)b^r, 0 ⩽ r ⩽ n.

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