Find the sum of all the three digit natural number which are multiple of 7
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Answered by
2
Answer:
Smallest three digit number divisible by 7 = 105 and the largest = 994
An = 994
A = 105
D = 7
n= ?
An = A + [ n - 1] D
thus
994 = 105 + [ n - 1 ] 7
thus by solving further
n = 128
now,
Sn = n/2 [ A + An]
Sn = 128/2 [ 105 + 994]
thus,
Sn = 70336.
Thus the sum of all the three digit numbers divisible by 7 is 70336
Step-by-step explanation:
hope it helps you
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0
Step-by-step explanation:
AS GAMING
TOTAL GAMING
JONTY GAMING
ACTION BOLT
SK SABIR
JIGS
DESI GAMERS
TL-SOONITA
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