Answer:
4.4 * 10^21
Step-by-step explanation:
Given :
Number of pop, n(p) = 10
Number of reggae, n(r) = 25
Number of blues, n(b) = 10
Total number of songs to select (n) = 15
If she wants equal Number if the 3 genres
Each genre will have : 15/3 = 5 songs each
Hence,
(10C5 * 25C5 * 10C5) * n!
Combination formula :
pCr = p! / (p-r)! r!
Using calculator to save computation time :
(10C5 * 25C5 * 10C5) * n!
(252 * 53130 * 252) * 15!
= 4412050844368527360000
= 4.4 * 10^21
-18+54
-17+53
-16+52
-15+51
-14+50
-13+49
-12+48
-11+47
-10+46
-9+45
-8+44
-7+43
-6+42
-5+41
-4+40
-3+39
-2+38
-1+37
1+35
2+34
3+33
4+32
5+31
6+30
7+29
8+28
9+27
10+26
11+25
12+24
13+23
14+22
15+21
16+20
17+19
18+18
Expression example: 15x7
equation example: 15x7=105
A right angle is 90 degree, and all the three angles make a sum of 180, so the two acute angles will always add up to be 90
Step-by-step explanation:
Given
< a = 145°
< a + < b = 180° { Being supplementary angles }
145° + < b = 180°
< b = 180° - 145°
< b = 35°
Hope it will help :)❤
