if A={1,2,3,4}, then the number of subsets of A that contain the element 2 but not 3, is
Arijit , 7 Years ago
Grade 11
Magical Mathematics[Interesting Approach]> if A={1,2,3,4}, then the number of subset...
1 Answers
Arun
Last Activity: 7 Years ago
If we don't want 3 in any subsets of A
Then we assume that there are only three elements
named 1,2,4
But we also want 2 in every subsets
Then we assume that there are only two elements named
1 ,4
Hence total subsets using these two elements = 22
= 4
Hope it helps
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free
Enter text here...
Other Related Questions on Magical Mathematics[Interesting Approach]
Given that (1+5x)⁴ = 1 + Px + Qx² + Rx³ +..... Find the values of P - 2Q + 3R
Magical Mathematics[Interesting Approach]
1 Answer Available
Last Activity: 1 Year ago(s)
9 men and 15 boys working 10 hours a day can make 12 pillars in 42 days, in how many days will 12 men and 22 boys working 8 hours a day can make pillars 4 times the previous number?
Magical Mathematics[Interesting Approach]
1 Answer Available
Last Activity: 2 Year ago(s)
In the given figure, PQ is a tangent at a point C to a circle with centre O. If AB is a diameter, find angle PCA + angle BCQ?
Magical Mathematics[Interesting Approach]
0 Answer Available
Last Activity: 2 Year ago(s)
for any two sets A and B (A-B)U(B-A)U (A intersection B)
Magical Mathematics[Interesting Approach]
0 Answer Available
Last Activity: 2 Year ago(s)
If someone has got 150 out of 200 marks in term 1 exam and 160 out of 200 marks in term 2 exam then what is the percentage in30:70
Magical Mathematics[Interesting Approach]
0 Answer Available
Last Activity: 2 Year ago(s)