Permutation and Combination – Page 19

Find-the-number-m-of-non-negative-integer-solution-of-x-y-z-18-

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Question Number 116881 by bemath last updated on 07/Oct/20 $Find the number m of non negative$ $integer solution of x + y + z = 18$ Answered by john santu last updated on 07/Oct/20 $${we}\:{can}\:{view}\:{each}\:{solution}\:,{say}\:{x}=\mathrm{3},\:{y}=\mathrm{7}\:,{z}=\mathrm{8}…

Find-the-number-m-of-ways-to-partition-10-students-into-four-team-so-that-two-team-contains-3-students-and-two-team-contains-2-students-

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Question Number 116883 by bemath last updated on 07/Oct/20 $Find the number m of ways to$ $partition 10 students into four team$ $so that two team contains 3 students$ $and two team contains 2 students .$ Answered by john santu last updated on…

Question-51286

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Question Number 51286 by aseerimad last updated on 25/Dec/18 Answered by mr W last updated on 26/Dec/18 $T y p e 1 :$ $N u m b e r o f w o r d s s t a r t i n g w i t h D :$ $= \frac{7!}{2!} = 2520$ $$ \…

Question-51287

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Question Number 51287 by aseerimad last updated on 25/Dec/18 Answered by mr W last updated on 26/Dec/18 ${l e t}^{'} s l o o k a t a n e x a m p l e :$ $t h e n u m b e r 1234 c o n s i s t s o f 4 d i g i t s :$ $1 r e p r e s e n t s h e r e t h e v a l u e 1 \times 1000$ $$\mathrm{2}\:{represents}\:{here}\:{the}\:{value}\:\mathrm{2}×\mathrm{100} \…

How-many-words-can-be-formed-from-different-letters-of-the-Your-answer-is-wrong-with-not-repeating-So-that-they-shouldn-t-start-with-o-neither-w-and-shouldn-t-end-with-w-and-should-be-r-

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Question Number 181971 by Acem last updated on 03/Dec/22 $H o w m a n y w o r d s c a n b e f o r m e d f r o m d i f f e r e n t$ $l e t t e r s o f t h e “ Y o u r a n s w e r i s {w r o n g}^{″} w i t h n o t$ $r e p e a t i n g ? S o t h a t t h e y {s h o u l d n}^{'} t s t a r t w i t h^{'} o^{'}$ $n e i t h e r^{'} w^{'} a n d {s h o u l d n}^{'} t e n d w i t h^{'} w^{'}, a n d$ $s h o u l d {b e}^{'} r^{'} &^{'} s^{'} a d j a c e n t s .$ $O y a \dots n, W e n \dots y, I o g \dots w, Y o u r w s \dots e : a r e i n v a l i d$ $$\:{Enrsow}…{g}\::\:{is}\:{valid} \…

If-10-different-balls-are-to-be-placed-in-4-boxes-at-random-then-the-probability-that-two-of-these-boxes-contain-exactly-2-and-3-balls-

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Question Number 181939 by greougoury555 last updated on 02/Dec/22 $I f 10 d i f f e r e n t b a l l s a r e t o b e p l a c e d$ $i n 4 b o x e s a t r a n d o m, t h e n t h e p r o b a b i l i t y$ $t h a t t w o o f t h e s e b o x e s c o n t a i n$ $e x a c t l y 2 a n d 3 b a l l s$ Answered by Acem last updated on 02/Dec/22…

The-number-1-2-3-4-7-are-randomly-divided-into-two-non-empty-subsets-The-probability-that-the-sum-of-the-numbers-in-the-two-subsets-being-equal-is-r-s-expressed-in-the-lowest-term-Find-r-s-

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Question Number 116397 by john santu last updated on 03/Oct/20 $T h e n u m b e r 1, 2, 3, 4, \dots, 7 a r e r a n d o m l y$ $d i v i d e d i n t o t w o n o n - e m p t y s u b s e t s .$ $T h e p r o b a b i l i t y t h a t t h e s u m o f t h e$ $n u m b e r s i n t h e t w o s u b s e t s b e i n g$ $e q u a l i s \frac{r}{s} e x p r e s s e d i n t h e l o w e s t$ $t e r m . F i n d r + s ?$ Answered by…

A-five-digits-number-divisible-by-3-is-to-be-formed-using-the-number-0-1-2-3-4-and-5-without-repetition-The-total-number-of-ways-this-can-be-done-is-

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Question Number 116360 by bemath last updated on 03/Oct/20 $A five digits number divisible by 3$ $is to be formed using the number$ $0, 1, 2, 3, 4 and 5 without repetition$ $The total number of ways this can$ $be done is__$ Answered by mr W last…

a-man-goes-in-for-an-examination-in-which-there-are-4-papers-which-maxmum-of-10-marks-for-each-paper-the-no-of-ways-of-getting-20-marks-on-the-whole-is-ans-891-

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Question Number 50724 by vajpaithegrate@gmail.com last updated on 19/Dec/18 $a man goes in for an examination in$ $which there are 4 papers which maxmum$ $of 10 marks for each paper the no of ways$ $of getting 20 marks on the whole is$ $ans : 891$ Answered by ajfour last updated…

Question-116177

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Question Number 116177 by Khalmohmmad last updated on 01/Oct/20 Commented by Dwaipayan Shikari last updated on 01/Oct/20 $\tan (x - \frac{π}{2}) \tan (x + \frac{π}{2}) = 1$ $\tan (x - \frac{π}{2}) = \cot (x + \frac{π}{2})$ $\tan (x - \frac{π}{2}) = \tan (- x)$ $$\mathrm{x}−\frac{\pi}{\mathrm{2}}=\mathrm{k}\pi+\left(−\mathrm{x}\right) \…

Category: Permutation and Combination