The value of is equal to...............

JEE MAIN 2020

04-09-2020 S1

Question

The value of $\sum_{\mathrm{r}=0}^{20}{ }^{50-\mathrm{r}} \mathrm{C}_6$ is equal to:

Select the correct option:

${ }^{51} \mathrm{C}_7-{ }^{30} \mathrm{C}_7$

${ }^{50} \mathrm{C}_7-{ }^{30} \mathrm{C}_7$

${ }^{51} \mathrm{C}_7+{ }^{30} \mathrm{C}_7$

${ }^{50} \mathrm{C}_6-{ }^{30} \mathrm{C}_6$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Medium

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