The marks of six boys in a group are 48, 59, 87, 37, 78 and 57. What are the average marks of all six boys?

(a) 61 (b) 65 (c) 69 (d) None of these

The marks of six boys in a group are 48, 59, 87, 37, 78 and 57. What are the average marks of all six boys?

(a) 61 (b) 65 (c) 69 (d) None of these

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