plz solve this it's urgent.(class 10) solve all 4 in a page so that it will be easy in sending.
expect accurate answers...
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4th problem answer:
First we find LCM of 2 and 5
LCM = 10
Clearly
The numbers which are divisible by 2 and 5 are divisible by 10.
The numbers divisible by 10 are
110, 120.............990
This forms an AP with a =110 & d = 10
n = ( ( l - a )/d) + 1
= ((990 - 110)/10) + 1
= 880 / 10 +1
= 88 +1 = 89
First we find LCM of 2 and 5
LCM = 10
Clearly
The numbers which are divisible by 2 and 5 are divisible by 10.
The numbers divisible by 10 are
110, 120.............990
This forms an AP with a =110 & d = 10
n = ( ( l - a )/d) + 1
= ((990 - 110)/10) + 1
= 880 / 10 +1
= 88 +1 = 89
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