anonymous
  • anonymous
what is the unit digit of product.....
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
|dw:1344435549985:dw|
anonymous
  • anonymous
second digit is 25?
anonymous
  • anonymous
2nd component is 251

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anonymous
  • anonymous
\[3547^{153}*251^{72}\]
anonymous
  • anonymous
first digit: unit value changes like 7,9,3,1,7... first digit: unit value remains 1
anonymous
  • anonymous
can you pls elaborate it
anonymous
  • anonymous
7 into 7 = 49; 9 into 7 = 63; 3 into 7 = 21; 1 into 7 = 7
anonymous
  • anonymous
but ques is for 153 times also product of 251^72
anonymous
  • anonymous
so 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
anonymous
  • anonymous
gtg bye

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