Reliance Jio Number series recognition Quiz 1

4x5-5=15
15x5+5=80
80x5-5=395
395x5+5=1980
1980x5-5=9895
9895x5+5=49480

156+37, 193+31, 224, __, 247+19, 266. The differences are consecutive prime numbers in decreasing order starting with 37. Hence, the next number in the series is 224 + 23 = 247

The given numbers are squares of consecutive natural numbers in an increasing order starting with 9. Hence, the missing number is 12, i.e, 144.

Here 39+13 =52 ;
52+13=65; 65+13 = 78
78+13=91; 91+13=104

4x3 =12
12x3 = 36
36x12 =432
432x36=15552
432x15552=6718464

5x2+3 =13
13x3-4 =35
35x4+5 =145
145x5-6=719
719x6+7=4321
4321x7-8 =30239

10 x 0.5 = 5
12 x 1.5 = 18
14 x 2.5 = 35
The next number in the series is 16 x 3.5 = 56.

14*4-4
52*4-4
204*4-4
812*-4
The next number in the series is 3244*4-4 = 12972.

11x2+1 =23 23x2+2 =48

46x2+3 = 95 95x2+4 =194

194x2+5 =393 393x2+6 =792

154+12, 166+16, 182+20, 202+24, 226, __.
The difference is increasing by 4, starting with 12.
So, the next difference is 24 + 4 = 28. Hence, the next number is 226 + 28 = 254.