Coaching Institute Has Students In 3 Batches X Y Z In Certain Examination Average Marks Obtained
1) 59 2) 61.6 3) 63.5 4) 64.7 5) 65 Answer: (4) 64.7 Solution: y = 6x Z = 7x... View Article
Latest Posts
Sides Ab Bc Ca Of Triangle Abc Have 3 4 5 Interior Points Find The Number Of Triangles
1) 144 2) 225 3) 205 4) none of these Answer: (3) 205 Solution: Total number of points = 3+4+5... View Article
Find The Number Of Point Xy Having Integral Coordinates Satisfying The Condition X2y225
1) 81 2) 12 3) 66 4) 69 Answer: (4) 69 Solution: Given, x2 + y2 <25 x and y... View Article
If L10 And L2 0 Be Two Intersecting Straight Lines The Number Of Points Are
1) 1 2) 0 3) 4 4) Infinite Answer: (3) 4 Solution: We have two lines L1 and L2 intersecting... View Article
A Person Invites A Party Of 10 Friends At Dinner And Place Them Are
1) 24/13 2) 25/24 3) 24/25 4) 13/24 Answer: (3) 24/25 Solution: Selection of 5 guest among 10 can be... View Article
10 Students Of Batch B Feel They Have Some Conceptual Doubt On Circular Permutation
1) 10C2 x 10C8 2)10C2 x 2! x 10C8 x 8! 3) 10C3 x 3! x 10C7 4) none of... View Article
Five Letter Word Formed Letters Appearing In The Odd Numbered Positions Are Taken From Mathematics
1) 390 2) 600 3) 540 4) 450 Answer: (3) 540 Solution: Given the word MATHEMATICS Now without repetition the... View Article
P Q R Points On Three Parallel Lines L1 L2 And L3 All Of Which Lie In One Plane Number Triangles
1) p+q+rC3 2)p+q+rC3–pC3–qC3–rC3 3) pC3 + qC3 + rC3 4) none of these Answer: (2)p+q+rC3–pC3–qC3–rC3 Solution: Given, p,q,and r are... View Article
The Number Of Ways In Which 3 Friends Can Stay In 2 Hotels Is
1) 23 2) 32 3) 3P2 4) None of these Answer: (1) 23 Solution: 3 friends can stay in 2... View Article
The Last Two Digits In X Sum K 1100k Are
1) 10 2) 11 3) 12 4) 13 Answer: (4) 13 Solution: X = 1!+2!+3!+4!+5!+6!+7!+8!+9!+10!+…….. X = 1+2+6+24+120+720+5040+40320+362780+3627800+…….. After 10!,... View Article
Number Of Prime Numbers Among The Numbers 105 2 105 3 105 4105 104 And 105 105 Is
1) 31 2) 32 3) 33 4) none of these Answer: (4) Solution: Any set of numbers is divisible by... View Article
Passengers Travel By A Double Decked Bus Which Can Accommodate 13 Upper Deck And 7 Lower Deck
1) 25 2) 21 3) 18 4) 15 Answer: (2) 21 Solution: 13 can be accommodated in upper deck and... View Article
Class Has 21 Students The Class Teacher Has Been Asked To Make N Groups Of R Students Each And Go To Zoo
1) 9 or 10 2) 10 or 11 3) 11 or 12 4) 12 or 13 Answer: (2) 10 or... View Article
What Are The Two Magnetic Forces
The two types of magnetic forces are attractive magnetic forces and repulsive magnetic forces. The former pulls two magnetic substances... View Article
What Do Determinants Tell Us
A determinant can help find the inverse of a matrix. Determinants are known to be useful for capturing how linear... View Article
Which Function Is Always Positive
Exponential functions where the exponent is an even number such as f(x) = x2 or f(x) = x4 are always... View Article
What Is The Ph Of A Weak Base
For a base to be classified as a weak base, it must have a pH value in the range of... View Article
Do Electrons Affect Atomic Mass
While calculating the atomic mass of an element, the mass of any electrons is usually ignored and atom’s mass is... View Article
What Are Conjugates In Math
In mathematics (more specifically algebra), a conjugate in the middle of two terms is associated with a change the sign... View Article
Is Nh4cl A Basic Salt
Ammonium chloride (chemical formula NH4Cl) is an acidic salt since it is a salt of a strong acid, namely hydrochloric... View Article
