how many multiples of 4 lie btw 20 and 250
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1
Answer:
multiple lie b/w 20 and 250
A = 24 , L = 248 , D= 4
248 = 24+(n-1)4
==> 248-24 = (n-1)4
==> 224/4 = n-1
==> 56 = n-1
==> 57 =n
Answered by
2
First term in this series will be 12. also the last digit will be 248.
the the series will be 12,16,20……….248.
it is a arithmetic series with first term a=12 and common difference of 4.
with last term as 248.
so 248=12+(n-1)x4 (lets assume it has n such numbers.)
(n-1).4= 248–12=236
n-1=236/4=59
n=59+1=60.
so 58 multiples of 4 lie between 20 and 250.
the the series will be 12,16,20……….248.
it is a arithmetic series with first term a=12 and common difference of 4.
with last term as 248.
so 248=12+(n-1)x4 (lets assume it has n such numbers.)
(n-1).4= 248–12=236
n-1=236/4=59
n=59+1=60.
so 58 multiples of 4 lie between 20 and 250.
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