Agar ek option 4 :7:36:21 hota to 
You should always check middle ratios 
Like b c

Conceptually not fit Into .
A and d ka ratio check karna Hota ha . First part pe b 9 and 2nd part pe 36 
So , it is 16 : 36 = A : D ratio .

O bhaiya MG concept hai😂😂😂

Gajab sir 🎉🎉

Basic bhi bataya kri aise to koi bhi krwa dega

Wow sir ji

Solving is fast here..

How can someone do it conceptually ? I think for few answers it won't work

Bro your channel got monitized Or not please tell me

B in 10 sec😂

Ser app konse app par padato

2sec me (b) ans

Gagan sir ka concept samaj nhi ata hai

Mai 5bar dekha ,, tab samjh aaya

Left side niche dhyan se dekho😊. Agar dikh jaye toh subscribe kr dena ❤

Abc wale ko 4 se multiply kar do sab check nahi karne padenge

😅😅😅😅😅😅😅😅😅sb ar sir ka concept chhhhhor😅😅😅😅

Aditya Ranjan sir ka trick hai  😆😆😆

Yahan se 6 sal pahle Ham logon ki sab chij sikh chuke hain😂 aur yah ham log ko Mohit Goyal sikhaye Hain