ਅੰਕਗਣਿਤ ਪ੍ਰਗਤੀ (AP) 11, 7, 3, _____ ਦੇ ਪਹਿਲੇ 20 ਸ਼ਬਦਾਂ ਦਾ ਜੋੜ ਹੈ | ਕਲਾਸ 14 | ਖੋਜ...

8, 7, 11, 12, 14, 17, 17, 22, (.....) (a) 27 (b) 20 (c) 22 (d) 24

Find the median of (i) 7, 11, 25, 45, 23, 12, 11, 9, 10 (ii) 15, 14, 11, 9, 7, 12, 18, 20 (iii) 8, 7, 9, 12, 8, 17, 15, 10 (iv) 14, 18, 12, 9, 3, 5, 11, 11, 19, 2

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Find: (i) the 20th term of the AP 9, 13, 17, 21, … (ii) the 35 th term of the AP 20, 17, 14, 11,… (iii) the 18th term of the AP sqrt(2), sqrt(18), sqrt(50), sqrt(98),… (iv) the 9th term of the AP (3)/(4), (5)/(4), (7)/(4), (9)/(4),.... (v) the 15th term of the AP -40, -15, 10, 35,....

Find the mode of (i) 7, 7, 8, 10, 10, 11, 10, 13, 14 (ii) 4, 5, 6, 7, 8, 7, 6, 5, 3, 4, 6, 7, 6

The number of terms of the A.P. 3,\ 7,\ 11 ,\ 15 ,\ ddot to be taken so that the sum is 406 is (a) 5 (b) 10 (c) 12 (d) 14

If 4" @ "9# 3=-2 and 11 # 2" @ "6=7 , then 14" @ "3 # 7=?

If 18 ,\ a ,\ b ,\ -3 are in A.P., the a+b= (a) 19 (b) 7 (c) 11 (d) 15

If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are (a) 5, 10, 15, 20 (b) 4, 10, 16, 22 (c) 3, 7, 11, 15 (d) none of these