Question

Q 10 and 11 th ..........

Answer 1

10). We will find out the LCM of 24,15 and 36 is 360.

Now, greatest 6-digit number is 999999.

Now, We will divide this number by LCM of 24,15 and 36, we will get,

999999/360 will get remainder 279.

Now 999999 – 279 = 999720.

Now we will check it out for the numbers we will get,

999720/24 = 41655

999720/15 = 66648

999720/36 = 27770

∴ 999720 is the greatest number 6-digit number divisible by 24,15 and 36.

11)

Factors of 1 to 10 numbers

1=1

2=1×2

3=1×3

4=1×2×2

5=1×5

6=1×2×3

7=1×7

8=1×2×2×2

9=1×3×3

10=1×2×5

∴ LCM of number 1 to 10 = LCM (1,2,3,4,5,6,7,8,9,10)

= 1×2×2×2×3×3×5×7 = 2520

answer is 2520