Sets and binomial expansions

Question 1 of 10

Use the binomial theorem to find (0.98)⁴ to 3 decimal places.

Question 2 of 10

What is the coefficient of the middle term in the expansion of (1 + x)⁶?

Question 3 of 10

Use the first two terms of the binomial expansion to estimate 1.02⁵.

Question 4 of 10

The middle term of (a + b)⁴ is

Question 5 of 10

Expand (1 + x)³.

Question 6 of 10

The coefficient of x³ in (1 + 2x)⁴ is

Question 7 of 10

If n(A) = 12, n(B) = 9 and n(A ∩ B) = 4, find n(A ∪ B).

Question 8 of 10

The constant term in (x + 1/x)⁴ is

Question 9 of 10

Expand (1 + x)^(1/2) up to the term in x².

Question 10 of 10

How many terms are there in the expansion of (a + b)⁷?