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anonymous
 3 years ago
what is the unit digit of product.....
anonymous
 3 years ago
what is the unit digit of product.....

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1344435549985:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[3547^{153}*251^{72}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0first digit: unit value changes like 7,9,3,1,7... first digit: unit value remains 1

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0can you pls elaborate it

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.07 into 7 = 49; 9 into 7 = 63; 3 into 7 = 21; 1 into 7 = 7

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but ques is for 153 times also product of 251^72

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0so after every 4 times it repeats. as 152 is a multiple of 4, the reptition will happen till there on the 156rd multiplication , we ll get 7 again so 7 into 1 = 7 == ANSWER
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