Maths Olympiad Exam Numerical Ability Probability

apple + pear = grape then the value of g+r+a+p+e

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Maths Olympiad Other Question

MMMMDCCI+MMMMDCCCI=?
The number of common terms in the two sequences 17,21,25,…,417 and 16,21,26,…,466 is
a) 78
b) 19
c) 20
d) 77