3 years ago

Find The last two digit of 36^2015

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

5 0

Answer:

Step-by-step explanation:

The last two digits of powers of 36 repeat in a pattern of length 5:

36^1 mod 100 = 36

36^2 mod 100 = 96

36^3 mod 100 = 56

36^4 mod 100 = 16

36^5 mod 100 = 76

36^6 mod 100 = 36

The last two digits of the power 2015 are the same as those of the 5th power: 76.

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The cost of 1 purse and 1 watch is £27.

EastWind [94]

1 purse and 1 watch is 27€
2 purse and 1 watch is 41€

So we can see the watch is constant means 1 watch is every time but purse is increase by 1 in the next expression

So 41-27 = 14€ is one purse
because the watch is every time one, so the next value increase is by purse

1purse and 1watch = 27
We know,
1 purse is 14€
So 27-14=13€ is one watch

We can check by
1 purse is 14 so two purse is 14*2=28
28+13=41
Which is same as they said in second expression

Hope it help you!¡

4 0

2 years ago

Solve the proportion 3/x-1=5/7

Sergeeva-Olga [200]

$x= \frac{4}{7}$