Divya is organizing a training for two different seminars, one for teachers and one for mechanics. She has a total of 132 pens a
nd 87 pads of paper. If each of the teachers need 3 pads of paper and 5 pens, and each of the mechanics needs 1 pad of paper and 2 pens, how many teachers and mechanics can she have at the conventions?
1 answer:
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ANSWER
EXPLANATION
From the Pascal's triangle,
The coefficients are :
1, 5, 10,10, 5,1
Because of the negative sign, the expansion will alternate sign.
We now put y=5 into the expansion to get,