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Find the remainder when 6^23 is divided by 5 ?

a. 2 b. 4 c. 1 d. 3

Read Solution (Total 1)

ans = 1
proof:
6^23 = 6^(4*5+3) = 6^(20) * 6^3 last 3 digits = 216
216/5 remainder = 1
12 years agoHelpfull: Yes(3) No(0)

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a)2560000 b) 102400000 c) 64000 d) 5120000 The difference between 3/5 of 2/3 of a number and 2/5 of 1/4 of the same number is 288. What is the number?

a)960 b) 850 c)895 d)955