Question

The average of three prime numbers lying between 47 and 74 is 191/3. The greatest possible sum between any two out of the 3 prime numbers is

Options

• 120

• 138

• 132

• 136

Answer 1

138
Explanation:
Three prime numbers lying between 47 and 74 are 53, 67 and 71.
whose mean = `(53+67+71)/3 = 191/3`

∴ Greatest possible sum = 67 + 71 = 138