Question 55

Find the missing number in the series
1,4, ?, 4, 1

Solution

Share

$$C_0^4 = 1$$
$$C_1^4 = 4$$
$$C_2^4 = 6$$
$$C_3^4 = 4$$
$$C_4^4 = 1$$

Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free