NIACL Model Paper 5 with solutions for free online practice

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DIRECTIONS (Qs. 61-65) : The following questions are based on the five three digit numbers given below
972   526   487   359   251
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Question : 65 of 100
 
Marks: +1, -0
If 1 is substracted from the last digit of each of the above numbers then sum of the digits of how many of them are prime numbers?
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