Paper 1 · Mathematical Reasoning and Aptitude
UGC NET December 2022 (15.03.2023) Shift-II (Sanskrit)
How many prime numbers exist between 20 and 60, and what is the average of these prime numbers?
A7, 41.5
B9, 40.33 ✓ Correct
C8, 39.5
D10, 42.33
Correct answer: (B) 9, 40.33 — The answer is 9 and 40.33.
Explanation
★The answer is 9 and 40.33.
★The primes between 20 and 60 are 23, 29, 31, 37, 41, 43, 47, 53 and 59.
★There are nine such prime numbers.
★Their sum is 363.
★The average is 363 divided by 9.
★That is about 40.33.
★So the answer is 9 and 40.33.
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