45 lessons,

6h 3m

Enroll

276

✕Download

## Tanya Bhatia is teaching live on Unacademy Plus

Tanya Bhatia

Topper in 12th Cbse, JRF holder, Assistant Professor in Satyawati DU Expert in NET for Economics.Teaching is work of heart❤❤❤

U

Unacademy user

Trilochanprasad B Hilli

3 years ago

excellent keep it up

0

Reply

E

Ekta

7 months ago

mam this also can be solved by multiplicative theorem of probability?? I tried and ans is same . is this right method

0

Reply

COMPLETE ANALYSIS OF DEC 2018 PAPER BY TANYA BHATIA

Q.89A box contains 10 bulbs, 4 of which are defective. If 3 of the bulbs are drawn rande without replacement, what is the probability that all three bulbs are defective? ptions 4 1 10 2. 4 3. 30 4. 10

Bon= lo Bulbs thot a00 3 bulbs arre defecive) C3 30