Question

5+3=10,7+4=35,10+2=45, then 8+6=??​

Answer 1

Step-by-step explanation:

5+3=10,7+4=35,10+2=45, then 8+6=??

answer=50

Answer 2

8 + 6 = 28 will be the answer.

Step-by-step explanation:

5 + 3 = 10

$5+3=^{5}C_{3}=\frac{5!}{3!(5-3)!}$

= $=\frac{5\times 4\times 3!}{3!\times 2!}=\frac{20}{2}=10$

7 + 4 = 35

$7+4=^{7}C_{4}=\frac{7!}{4!(7-4)!}$

= $\frac{7\times 6\times 5\times 4!}{4!\times 3!}$

= $\frac{210}{6}=35$

10 + 2 = 45

$10+2=^{10}C_{2}=\frac{10!}{2!(10-2)!}$

= $\frac{10\times 9\times 8!}{2!8!}=45$

8 + 6 = ?

$8+6=^{8}C_{6}=\frac{8!}{6!(8-6)!}$

= $\frac{8\times 7\times 6!}{6!\times 2!}=28$

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