20. A shopkeeper has 5 red pens, x green pens and
8 black pens. If range of the data is a multiple of 7
and x is a two-digit prime number, then the sum of
digits of maximum possible value of x is
(1) 17
(2) 12
(3) 16
(4)
15
Answers
Answered by
0
Answer:
Step-by-step explanation:
Answered by
1
Answer:
17
Step-by-step explanation:
since, the two digital Prime number are
11,13,17,19..............89,93,97
Given,
the number of red pen=5
Black pen =8
The green pen=x
where x, is a two-digital prime numbers,
such that, 5+8+x is divisible by 7
(.: the range of the data is a multiple of 7)
since we have to find maximum value of x
if x=97
5+8+97=110 is not disible by 7
if x=93
5+8+93=106 is not disible by 7
if x=89
5+8+89=102 is a multiple of 7
hence the maximum value of x is 89
that is the sum of digitals of maximum possible value of X is 17.
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