Question

complete the following series 1890,1890,630,126,18,?
(a)6
b.9
c.2
d.3​

Answer 1

2 is correct answer as

630*3=1890

126*5=930

18*7=126

2*9=18

Answer 2

Answer :

The missing number of the given series is 2.

Option (c) 2

Step by step explanation :

Hey Mate,

Given Series,

1890, 1890, 630, 126, 18, X.

#1

1890 / 1 = 1890

#2

1890 / 3 = 630

#3

630 / 5 = 126

#4

126 / 7 = 18

Now we know the logic behind the series, now we need to divide 18 with 9 to get the next term of the series. (ODD No. 1, 3, 5, 7, 9, 11, 13, 15 .... )

So,

The missing number of the given series is 18 / 9 = 2.