If A Set A Equal 3 7 11 407 And A Set B Equal 2 9 16 709 Then N A Intersection B Equal
(1) 13 (2) 14 (3) 15 (4) 16 Solution: Given A = {3, 7, 11, …, 407} and B =... View Article
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If P Th Term And Q Th Term Of An Ap Are 1 By Qr And 1 By Pr Respectively Then R Th Term Of The Ap Equal
(1) 1/pqr (2) 1 (3) 1/pq (4) pq Solution: Given pth term = 1/qr qth term = 1/pr a+(p-1)d =... View Article
If An Ap T35 Equal 50 And D Equal 3 Then S35 Equal
(1) 35 (2) 38 (3) 32 (4) 29 Solution: Given T35 = -50, d = -3 a+34d = -50 a+34×-3... View Article
The Series 1 1 Fact Plus 2 2fact Plus 3 3 Fact Plus N N Fact Equal
(1) (n + 1)! -n (2) (n + 1)! -1 (3) n! -1 + n (4) n! +1 -n Solution:... View Article
First Term Of A Gp Of 2n Terms Is A And The Last Term Is L The Product Of All The Terms Of The Gp Is
(1) (al)n/2 (2) (al)n-1 (3) (al)n (4) (al)2n Solution: Given first term = a Last term = ar2n-1 = l... View Article
The Sum Of The Numbers 1 Plus 2 2 Plus 3 22 Plus 4 23 Plus 50 249 Is
(1) 1 + 49. 249 (2) 1 + 49. 250 (3) 1 + 50. 249 (4) 1 + 50. 250... View Article
In A Gp The Last Term Is 1024 And The Common Ratio Is 2 Its 20 Th Term From The End Is
(1) 1/512 (2) 1/1024 (3) 1/256 (4) 512 Solution: Given r = 2 arn-1 = 1024 a, ar, ar2 ….1024... View Article
If 1 A1 A2 A3 An 31 Are In Ap And A7 An 1 Equal 5 By 9 Then N Equal
(1) 28 (2) 14 (3) 15 (4) 13 Solution: Given 1, A1, A2, A3, …. An, 31 are in A.... View Article
For An Ap S100 Equal 3 S50 The Value Of S150 S50
(1) 8 (2) 3 (3) 6 (4) 10 Solution: Given S100 = 3 S50 (100/2)(2a+99d) = 3(50/2)(2a+49d) 50(2a+99d) = 75(2a+49d)... View Article
If A1 And A2 Be The Two Am S Between Two Numbers 7 And 1 By 7 Then 2 A1 A2 2 A2 A1 Equal
(1) 49 (2) 48/7 (3) 50/7 (4) 1 Solution: Given 7, A1, A2, 1/7 are in AP. A1-7 = A2... View Article
Can A Magnet That Has Lost Its Strength Be Re Magnetized
As long as the internal alignment of the particles has not been changed the magnet can be remagnetized. The magnet... View Article
Which Metal Is Used To Make A Permanent Magnet
Permanent magnets are made using ferromagnetic materials like iron, cobalt, nickel etc. Alloys of rare earth metals are also used... View Article
Is A Horseshoe Magnet A Permanent Magnet
A horseshoe magnet is one type of permanent magnet. Since both the poles of the horseshoe magnet are in the... View Article
Is Ultrasound A Mechanical Wave Or An Electromagnetic Wave
Ultrasounds are sound waves having a frequency above 20,000Hz. Ultrasound is a mechanical wave. It requires a material medium for... View Article
What Is The Transmission Of A Wave
When the electromagnetic waves arrive at the boundary between the two materials it gets reflected, absorbed or transmitted. When the... View Article
Does Higher Ohms Mean More Resistance
Resistance is measured in Ohms. So, a higher value of ohms simply means a higher value of resistance. If the... View Article
What Does Repulsion Mean
Repulsion is the force that pushes the objects away from each other. The repulsive force acts between bodies of the... View Article
Is Weight A Force
In physics, weight is the force that acts on a particular mass due to gravity. The unit of weight is... View Article
Can Insulators Be Charged
Insulators can be charged by rubbing together. The substance that gives electrons gets positively charged and the substance that gains... View Article
When Two Waves Are Mutually Coherent It Means That
When two sources are mutually coherent it means that they have the same frequency and waveform. The phase difference between... View Article
