Write the simple operation process of 5 / 76 × 77!

Write the simple operation process of 5 / 76 × 77!

5/76×77
=5/76×（76+1）
=5/76×76+5/76
=5+5/76
=5 and 5 / 76

This is a civil servant number reasoning problem, the title is 77, 63, 23, 18, 41, 31, ()
A is - 5, B is 6, C is 12, D is 18
Is a square sequence and variant

Choose a
Add every other term to square
77+23=100
63+18=81
……
41-5=36

How to use it simply
How to use the simple method to calculate?

3.6÷0.4-1.2×5 =9-6=3
90÷【3.6-1.8】=90/1.8=50
【31.6-11.7】÷2.5÷0.4=【31.6-11.7】÷(2.5*0.4)=【31.6-11.7】÷1=31.7-0.1-11.7=19.9
3.4×7.8÷3.9=3.4*(7.8÷3.9)=3.4*2=6.8
5.23×4+4.77÷0.25=5.23×4+4.77×4=(5.23+4.77)×4=10×4=40
The basic idea is the combination method, the numerator denominator at the same time amplification equal multiple method, again simple? Then use the pen to do division one by one! These are very easy to understand, you can have a good look!