Question

2 by3 ×(-6by7 +4by5) = (2by3 ×4by5) ×(-6by7) i want step by step answer please

Answer 1

Answer:

Answer:

First of all we will take the HCF of all but, before that we will convert them in a similar unit :

6m 30cm =6 X 100 + 30

=630cm

5m 85cm =5 X 100 + 85

=585cm

3m 60cm =3 X 100 + 60

=360cm

Now, lets take the HCF :

HCF of 630cm, 585cm, 360cm

= 45 cm

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Answer 2

Answer:

Recall that ‘!’ represents factorial.

n!=n∗(n−1)∗(n−2)...

In other words, n! results from multiplying all the numbers from 1 to n.

For example, 6! would be 1∗2∗3…∗6=720 …

Instead of multiplying all this out, notice that the numerator is just 1 to 9 multiplied all together, which is 9! . Also in the numerator is 1000.

Similarly, the denominator is 2 to 10, multiplied out. Notice that multiplying by 1 makes no difference, so 2 to 10 is actually 10! .

Now we have fraction (9!∗1000)/10!.

Simplifying, all of 9! and 10! with the exception of 10 cancels out, because 10! is simply 9! times 10:

9∗8∗7∗6∗5∗4∗3∗2∗100010∗9∗8∗7∗6∗5∗4∗3∗2=100010.

So: 1000 / 10 = 100

Hope that helps!

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