Find the sum of all 3 digits no. Which are multiplr of 11
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Step-by-step explanation:
i knew it but it is too long
Ravleen03:
Multiple of 11 are 22,33,44
Sn=n/2(2a+(n-1)d)
S3=3/2(2.22+(3-1)d
S3=3/2(44+22)
S3=3/2×66
S3=99
Answered by
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Answer:99
Step-by-step explanation:Multiple of 11 are 22,33,44
Sn=n/2(2a+(n-1)d)
S3=3/2(2.22+(3-1)d
S3=3/2(44+22)
S3=3/2×66
S3=99
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