Question

Select the correct answer from the given alternatives.

A question paper has two parts, A and B, each containing 10 questions. If a student has to choose 8 from part A and 5 from part B, In how many ways can he choose the questions?

Options

• 320

• 750

• 40

• 11340

Answer 1

11340

Explanation;

Number of ways to choose 8 questions from

Part A and 5 from Part B = ¹⁰C₈ × ¹⁰C₅ 

= ¹⁰C₂ × ¹⁰C₅

= 45 × 252

= 11340