Question

18. If 21-7 X 51-4 = 1250, find the value of n.
Hint: 2n-4x2-3 x 51-4 = 1250
2n-4x5N-4
=1250
1250 n
= (2x5)-4 = (10)4.
23​

Answer 1

Step-by-step explanation:

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ANSWER

2

n−7

×5

n−4

=1250

2

n−7

×5

n−7

×5

3

=1250

⇒(2×5)

n−7

=

125

1250

⇒10

n−7

=10

1

⇒n−7=1

⇒n=7+1=8