Permutation and Combination – Page 22

The-number-of-triangles-that-can-be-formed-by-5-points-in-a-line-and-3-points-on-a-parralel-line-is-

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Question Number 180520 by cortano1 last updated on 13/Nov/22 $The number of triangles$ $that can be formed by 5 points$ $in a line and 3 points on a parralel line$ $is___$ Answered by nikif99 last updated on 13/Nov/22…

Find-the-number-of-all-such-7-digit-no-which-satisfy-conditions-1-divisible-by-3-2-repetition-allowed-3-zero-is-not-used-

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Question Number 49408 by rahul 19 last updated on 06/Dec/18 $F i n d t h e n u m b e r o f a l l s u c h 7 - d i g i t$ $n o . w h i c h s a t i s f y c o n d i t i o n s :$ $1) d i v i s i b l e b y 3$ $2) r e p e t i t i o n a l l o w e d$ $3) z e r o i s n o t u s e d .$ Commented by mr W…

find-the-number-of-numbers-less-than-10-6-which-contain-at-least-3-different-digits-

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Question Number 180421 by mr W last updated on 12/Nov/22 $f i n d t h e n u m b e r o f n u m b e r s l e s s t h a n$ $10^{6} w h i c h c o n t a i n a t l e a s t 3 d i f f e r e n t$ $d i g i t s .$ Answered by liuxinnan last updated on 12/Nov/22…

The-integers-between-1-to-10-4-contain-exactly-one-8-and-one-9-is-I-got-1160-but-one-is-arguing-1154only-kindly-help-me-out-

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Question Number 180335 by SLVR last updated on 10/Nov/22 $T h e i n t e g e r s b e t w e e n 1 t o 10^{4}$ $c o n t a i n e x a c t l y o n e 8 a n d o n e 9$ $i s ? I g o t 1160 b u t o n e i s a r g u i n g$ $1154 o n l y . . k i n d l y h e l p m e o u t$ Commented by mr W last updated on…

There-are-6-people-going-to-sit-in-a-circle-The-number-of-arrangements-they-sit-if-there-are-2-people-who-always-sit-next-to-each-other-

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Question Number 114797 by bemath last updated on 21/Sep/20 $T h e r e a r e 6 p e o p l e g o i n g t o s i t i n$ $a c i r c l e . T h e n u m b e r o f a r r a n g e m e n t s$ $t h e y s i t i f t h e r e a r e 2 p e o p l e w h o$ $a l w a y s s i t n e x t t o e a c h o t h e r$ Answered by mr W last updated on…

How-many-polygons-can-be-formed-from-a-heptagon-

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Question Number 180212 by Acem last updated on 09/Nov/22 $H o w m a n y p o l y g o n s c a n b e f o r m e d$ $f r o m a h e p t a g o n ?$ Answered by mr W last updated on 10/Nov/22 $a p o l y g o n i s a c l o s e d p a t h s t a r t i n g f r o m$ $${a}\:{point}\:{and}\:{ending}\:{at}\:{the}\:{same}\:{point}.…

Question-49101

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Question Number 49101 by Tinkutara last updated on 02/Dec/18 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question-49100

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Question Number 49100 by Tinkutara last updated on 02/Dec/18 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question-49099

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Question Number 49099 by Tinkutara last updated on 02/Dec/18 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question-49036

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Question Number 49036 by Tinkutara last updated on 01/Dec/18 Commented by prakash jain last updated on 02/Dec/18 $2^{n - 1} g a v e a t l e a s t 1 w r o n g a n s w e r$ $(i n c l u d e s t u d e n t w i t h 2 w r o n g a n s w e r s)$ $$\mathrm{2}^{{n}−\mathrm{2}} \:{gave}\:{at}\:{least}\:\mathrm{2}\:{wrong}\:{amswers}\: \…

Category: Permutation and Combination