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Question

If S=10+20+30+40++500, then the value of S is

A
0
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B
150
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C
50
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D
100
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Solution

The correct option is C 50
S=10+20+30+40++500
Since, we know that
aman=amn
When m=n, then
amam=amm=a0=1, where a is any real number except 0.
Hence, we get that
10=1
20=1
30=1

500=1

S=1+1+1++1 (50 times)
S=1×50
S=50

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