CA Foundation

The 4 arithmetic means between -2 and 23 are?

Yash Chhajed answered  •  3 minutes ago
Let, The Four Arithmetic Mean a1,a2,a3,a4 .Total No.Of Series Is 6.

a+(n-1)d=23

a+(6-1)d=23

-2+5d=23

5d=23+2
d=25/5

d=5
So The Four Arithmetic Means Are
-2+5=3
-2+10=8
-2+15=13
-2+20=18

In how many ways 4 men and 3 women are arranged at a round table if the women never sit together?
  • a)
    6 x 6!
  • b)
    6!
  • c)
    7!
  • d)
    None
Correct answer is option 'A'. Can you explain this answer?

Arpitha S.m answered  •  10 hours ago
Let us consider 4 men has 4! and 3 women has 3! ans: 4!/3!=4×3!/3! = 4ways men and women are arranged at a round table. so right answer is (d) none.

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