Question

how many numbers upto 500 and 900 are divisible by 2, 5, and 7 all together ?

Answer 1

Answer:

Their are 5 numbers divisible by 2,5 and 7

Step-by-step explanation:

• LCM of 2, 5 and 7=7
• After every 70 nos., the no. would be divisible by all the three digits
• Like, 70,140,210,etc.
• So, after 500 the next no. divisible by 2,5 and 7. would be 560 and so on
• So the nos. would be 560,630,700,770 and 840
• Hence their are 5 digits between 500 and 900 which are divisible by 2,5 and 7.