This is a simple subtraction series. Each number is 35 less than the previous number.

Series is written in descending order with a difference of 9, 8, 7, 6 and 5, respectively. Hence, the missing number will be 104.

In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.

First term → 9

Second term → (9 *2 -1) = 17

Third term → (17 *2 -1) = 33

Fourth term → (33 *2 -1) = 65

Fifth term → (65 *2 -1) = 129

Clearly, alternatively we add and subtract 10% of a term to obtain the next term of the series.
Thus, 10000 + (10% of 10000)= 11000;
11000 – (10% of 11000) = 9900;
9900 + (10% of 9900)  = 10890;
10890 – (10% of 10890) = 9801.
9801 + (10% of 9801)  = 9801+980 = 10781.
So, missing term = 10890- (10% of 10890)= 9801.

496 – 492 = 4 = 2²
492 – 483 = 9 = 3²
483 – 467 = 16 = 4²
So, the next has to be a difference of 25 = 5²
467 – 25 = 442

There are three alternative series 2, 3, 4 �� (consecutive numbers), 9, 8, 7 �. (consecutive number in descending order), and 23, 25, 27, � Hence, 7 will come in place of the missing number.

In this simple subtraction series, the numbers decrease by 3.

5
5 x 3 + 6 = 21
21 x 3 + 6 = 69
69 x 3 + 6 = 213
213 x 3 + 6 = 645
645 x 3 + 6 = 1941

This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number.

On December 28, 2019, NASA Astronaut Christina Koch created the record for the longest single spaceflight by a woman, which was earlier held by NASA astronaut Peggy Whitson in 2017.

The fund raising through IPOs plunged to a low Rs 12,362 crore in 2019, down a full 60 per cent from 2018 when the street mopped up Rs 30,959 crore. The outgoing year saw only 16 initial public offerings (IPOs) as against 24 in 2018.

Both A and B

Don Imus, the legendary American host of the radio show ‘Imus in the Morning’ has passed away at the age of 79. After being on air for nearly fifty years, the much-acclaimed radio host took retirement from his famous radio show in 2018.

All India Radio organized the National Symposium of Poets 2020.