CSAT: Ways to Select Students Quiz

Question

In how many different ways can 3 students be selected from 7 students?

Accepted Answer

We are given: Total number of students = 7 Number of students to be selected = 3 Since the order of selection does not matter, we use the Combination formula. nCr = n! / [ r! (n − r)! ] Substitute the values: 7C3 = 7! / [3! × 4!] Expand the factorial terms: 7C3 = (7 × 6 × 5 × 4!) / (3 × 2 × 1 × 4!) Cancel 4! from the numerator and denominator: 7C3 = (7 × 6 × 5) / 6 Now simplify: 7 × 5 = 35 So, the number of ways to select 3 students from 7 students is 35. Final Answer: 35 (Option C)

Answer

21

Answer

30

Answer

35

Answer

42

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Explanation

Given

Solution

✅ Answer

Question

Options

Explanation

Given

Solution

✅ Answer