7. How many odd natural numbers up to 1400 are
divisible neither by 5 nor by 7?
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1
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Step-by-step explanation:
6
Answered by
0
Answer:
Upto 1400..... 200 multiples of 7
280 of 5
40 multiples of both 7 n 5 (35)
Upto 1400 there are 100 odd no. Divided by 7 and 140 odd no. Divided by 5 and 20 odd no. Divided by both (35)..
140+100-20= 220 which are either divisible by 5or 7
The remaining 700-220= 480 odd no. Which are neither divided by 7or 5
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