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NABTEB Mathematics 2025 Objective — Question 49

Question 49 of 60 from the National Business and Technical Examinations Board (NABTEB) Mathematics 2025 Objective paper, with the correct answer and a full explanation.

If the mean of the numbers 10, 14, x, 11, 13 is x, find the value of x.

A. 15
B. 14
C. 13

Explanation

Mean = (10+14+x+11+13)/5 = x. 48+x=5x, so 48=4x, x=12.

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