Question

7. If the mean of 16, 14, x, 23, 20 is 18, find the value of x.
6. If the mean of x, X + 2, X + 4, x + 6, X + 8 is 24, find x.
9. Renu scored 73, 86,78 and 75 marks in four tests. What is the le​

Answer 1

Answer:

7 wale ka answer hai 17 aur 6 wale ka 20

Step-by-step explanation:

7.mean =sum of observation by no.of observation so (16+14+x+23+20)by 5=18

73+x=90

x=90-73

x=17

6.same formula

(x+x+2+x+4+x+6+x+8)by 5=24

5x+20=24*5

5x=120-20

x=100 by 5

x=20