Find the missing number
$4, 7, 12, . . . . ., 28, 39$

15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

19

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

21

No worries! We‘ve got your back. Try BYJU‘S free classes today!

23

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $19$
Pattern is $+ 3, + 5, + 7, + 9, + 11......$
$∴$ Missing number $= 12 + 7 = 19$

Suggest Corrections

Similar questions

Q. Find the missing number.

4, 7, 12,__, 28, 39.

Q. The average frequency is

18

. Find the missing frequency

f

Class Interval	Frequency
$11 - 13$	$7$
$13 - 15$	$6$
$15 - 17$	$9$
$17 - 19$	$13$
$19 - 21$	$f$
$21 - 23$	$5$
$23 - 25$	$4$

Q. The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs.

18

. Find the missing frequency

k

Daily pocket allowance (in Rs.)	$11 - 13$	$13 - 15$	$15 - 17$	$17 - 19$	$19 - 21$	$21 - 23$	$23 - 25$
Number of children	$7$	$6$	$9$	$13$	$k$	$5$	$4$

The following distribution shows the daily pocket allowance of children of a locality. If the mean pocket allowance is Rs. 18, find the missing frequency f.
$\begin{matrix} Daily pocket allowance(in Rs) & 11 - 13 & 13 - 15 & 15 - 17 & 17 - 19 & 19 - 21 & 21 - 23 & 23 - 25 Frequency & 7 & 6 & 9 & 13 & f & 5 & 4 \end{matrix}$

Q. The arithmetic mean of the following series is 18, find out the missing frequency.

Class Interval	11−13	13−15	15−17	17−19	19−21	21−23	23−25
Frequency	3	6	9	13	?	5	4

Join BYJU'S Learning Program

Find the missing number4,7,12,.....,28,39

The correct option is B 19Pattern is +3,+5,+7,+9,+11......∴ Missing number =12+7=19

Find the missing number
$4, 7, 12, . . . . ., 28, 39$

The correct option is B $19$
Pattern is $+ 3, + 5, + 7, + 9, + 11......$
$∴$ Missing number $= 12 + 7 = 19$