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Study the pattern :
$1 \times 8+1=9$
$12 \times 8+2=98$
$123 \times 8+3=987$
$1234 \times 8+4=9876$
$12345 \times 8+5=98765$
Write the next two steps. Can you say how the pattern works?
[(Hint: $12345=11111+1111+111+11+1$]
Given:
Given pattern is
$1 \times 8+1=9$
$12 \times 8+2=98$
$123 \times 8+3=987$
$1234 \times 8+4=9876$
$12345 \times 8+5=98765$
To do:
We have to write the next two steps.
Solution:
From the pattern we can observe that,
$12345 = (11111 + 1111 + 111 + 11 + 1)$
$12345 \times 8 = (11111 + 1111 + 111 + 11 + 1) \times 8$
$= 11111 \times 8 + 1111 \times 8 + 111 \times 8 + 11 \times 8 + 1 \times 8$
$= 88888 + 8888 + 888 + 88 + 8$
$= 98760$
This implies,
$12345 \times 8+5=98765$
Therefore,
The next two terms of the given pattern are:
$123456 \times 8 + 6 = 987654$
$1234567 \times 8 + 7 = 9876543$