Math, asked by Vikram6999, 1 year ago

The value of 20c4+220.c3+20c2-22c18 is?

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Answered by devendra57

1

IF ANSWER IN THE FORM OF NCR THEN CALCULATE THE VALUE AND CHECH THE ANSWER
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Answered by mkrishnan

1

20C4 +20C3 +20C2 -20C18

=20C4+20C3 +20C2-20C2.

since 18 +2 =20

=21C4 +0

=21x20x19x18/1×2×3×4

=7×5×19×9

=5985

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