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WHAT IS THE NUMBER OF ONTO FUNCTIONS FROM A={1,2,3,4} TO B={5,6} ?

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5 years ago

Ashok Kumar Sharma
26 Points
```							If a,b,c,d, and p are different real numbers  such that : (a2+b2+c2)p2-2(ab+bc+cd)p+(b2+c2+d2) 0, then show that a,b,c and d are in G.P.
```
5 years ago
AUREA
61 Points
```							If no. of elements in set A and B respectively is m and n such that 1Then the formula of calculating the no. of onto function from A to B is∑(-1)n-r nCr rm  r varies from 1 to nfor this question n=2 and m=4putting the values{ (-1)1 2C1 14 +(-1)0 2C2 24 }   = -1x2x1 + 1x1x16   = -2 + 16   =14     please approve if useful  ; )
```
5 years ago
AUREA
61 Points
```							sorry, I missed [.......such that (1then the formula of calculating ….......]
```
5 years ago
AUREA
61 Points
```							it is 1≤n≤m
```
5 years ago
sathish
79 Points
```													 						If no. of elements in set A and B respectively is m and n such that 1 Then the formula of calculating the no. of onto function from A to B is ∑(-1) n-r n C r r m r varies from 1 to n for...
```
5 years ago
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Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions