Permutation and Combination – Page 48

I-have-6-friends-and-during-a-vacation-I-met-them-during-several-dinners-I-found-that-I-dined-with-all-the-6-exactly-on-1-day-with-every-5-of-them-on-2-days-with-every-4-of-them-on-3-days-with-eve

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Question Number 21686 by Tinkutara last updated on 30/Sep/17 $I have 6 friends and during a vacation$ $I met them during several dinners . I$ $found that I dined with all the 6 exactly$ $on 1 day; with every 5 of them on 2 days;$ $with every 4 of them on 3 days; with$ $every 3 of them on 4 days; with every 2$ $of them on 5 days . Further every friend$ $$\mathrm{was}\:\mathrm{present}\:\mathrm{at}\:\mathrm{7}\:\mathrm{dinners}\:\mathrm{and}\:\mathrm{every} \…

In-a-group-of-ten-persons-each-person-is-asked-to-write-the-sum-of-the-ages-of-all-the-other-9-persons-If-all-the-ten-sums-form-the-9-element-set-82-83-84-85-87-90-91-92-find-the-individual

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Question Number 21685 by Tinkutara last updated on 30/Sep/17 $In a group of ten persons, each person$ $is asked to write the sum of the ages of$ $all the other 9 persons . If all the ten$ $sums form the 9 - element set {82, 83, 84,$ $85, 87, 90, 91, 92} find the individual$ $ages of the persons (assuming them to$ $be whole numbers of years) .$ Terms…

Suppose-A-1-A-2-A-20-is-a-20-sided-regular-polygon-How-many-non-isosceles-scalene-triangles-can-be-formed-whose-vertices-are-among-the-vertices-of-the-polygon-but-whose-sides-are-not-the-side

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Question Number 21683 by Tinkutara last updated on 30/Sep/17 $Suppose A_{1} A_{2} \dots A_{20} is a 20 - sided regular$ $polygon . How many non - isosceles$ $(scalene) triangles can be formed whose$ $vertices are among the vertices of the$ $polygon but whose sides are not the$ $sides of the polygon ?$ …

How-many-four-digit-numbers-are-there-whose-decimal-notation-contains-not-more-than-two-distinct-digits-

Tinku Tara June 4, 2023 Permutation and Combination 0 Comments

Question Number 21651 by Tinkutara last updated on 30/Sep/17 $H o w m a n y f o u r - d i g i t n u m b e r s a r e$ $t h e r e w h o s e d e c i m a l n o t a t i o n c o n t a i n s$ $n o t m o r e t h a n t w o d i s t i n c t d i g i t s ?$ Commented by mrW1 last updated on 01/Oct/17 $$\mathrm{576}\:? \…

if-in-the-expansion-of-1-x-n-the-coefficient-of-x-9-is-the-aritmetic-mean-of-the-coeficients-of-x-8-and-x-10-find-the-possible-value-of-n-where-n-is-a-positive-integer-

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Question Number 87175 by john santu last updated on 03/Apr/20 $if in the expansion of {(1 + x)}^{n} the$ $coefficient of x^{9} is the aritmetic$ $mean of the coeficients of x^{8} and$ $x^{10} . find the possible value$ $of n where n is a positive integer$ …

Prove-that-n-2-n-n-is-an-integer-n-N-

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Question Number 21598 by Tinkutara last updated on 29/Sep/17 $P r o v e t h a t \frac{n^{2}!}{{(n!)}^{n}} i s a n i n t e g e r, n \in N .$ Terms of Service Privacy Policy Contact: info@tinkutara.com

If-n-objects-are-arranged-in-a-row-then-find-the-number-of-ways-of-selecting-three-of-these-objects-so-that-no-two-of-them-are-next-to-each-other-

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Question Number 21587 by Tinkutara last updated on 28/Sep/17 $If n objects are arranged in a row, then$ $find the number of ways of selecting$ $three of these objects so that no two of$ $them are next to each other .$ Commented by mrW1 last updated on 29/Sep/17…

Category: Permutation and Combination

I-have-6-friends-and-during-a-vacation-I-met-them-during-several-dinners-I-found-that-I-dined-with-all-the-6-exactly-on-1-day-with-every-5-of-them-on-2-days-with-every-4-of-them-on-3-days-with-eve

In-a-group-of-ten-persons-each-person-is-asked-to-write-the-sum-of-the-ages-of-all-the-other-9-persons-If-all-the-ten-sums-form-the-9-element-set-82-83-84-85-87-90-91-92-find-the-individual

Suppose-A-1-A-2-A-20-is-a-20-sided-regular-polygon-How-many-non-isosceles-scalene-triangles-can-be-formed-whose-vertices-are-among-the-vertices-of-the-polygon-but-whose-sides-are-not-the-side

How-many-four-digit-numbers-are-there-whose-decimal-notation-contains-not-more-than-two-distinct-digits-

if-in-the-expansion-of-1-x-n-the-coefficient-of-x-9-is-the-aritmetic-mean-of-the-coeficients-of-x-8-and-x-10-find-the-possible-value-of-n-where-n-is-a-positive-integer-

Prove-that-n-2-n-n-is-an-integer-n-N-

If-n-objects-are-arranged-in-a-row-then-find-the-number-of-ways-of-selecting-three-of-these-objects-so-that-no-two-of-them-are-next-to-each-other-

Determine-the-largest-3-digit-prime-factor-of-the-integer-2000-C-1000-

what-is-coefficient-of-t-3-in-the-expanssion-1-t-6-1-t-3-

How-many-zeroes-are-there-in-99-