17 Dec 2020: The Hindu Analysis
UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 17th December 2020. Important news and... View Article
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16 Dec 2020: PIB Summary & Analysis
December 16th, 2020, PIB:- Download PDF Here TABLE OF CONTENTS 1. MoU between India and the USA 2. Prime Minister’s... View Article
17 Dec 2020: UPSC Exam Comprehensive News Analysis
17 Dec 2020 CNA:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related INTERNATIONAL RELATIONS... View Article
The Maximum No Of Points Into Which 4 Circles And 4 Straight Lines Intersect Is
1) 26 2) 56 3) 50 4) 72 Answer: (3) 50 Solution: 4 straight lines intersects in 4C2 = 6... View Article
A Five Digit Number Divisible By 3 Is To Be Formed Using The Digit 012345 Without Repetition
1) 216 2) 184 3) 256 4) 225 Answer: (1) 216 Solution: A number is divisible by 3, if the... View Article
Six Xs Are To Be Placed In The Square Each Row Contain Atleast One X The Number Of Ways
1) 18 2) 22 3) 26 4) 30 Answer: (3) 26 Solution: Row 1 has 2 squares, Row 2 has... View Article
In A Certain Test Ai Students Gave Wrong Answers To Atleast I Questions Where I 123k
1) a1+a2+…+ak 2)a1+2a2+…+kak 3) a1+a2+…+ak-k 4) k/2(k+1) Answer: (1) a1+a2+…+ak Solution: Total number of students who gave wrong answers =... View Article
Number Of Numbers Greater Than 3000 Which Can Be Formed By Using The Digits 012345
1) 1240 2) 1280 3) 1320 4) 1380 Answer: (4)1380 Solution: 4 digit numbers greater than 3000 = 3 x... View Article
If The Coefficient Of 5th 6th And 7th Terms Of The Expansion Of 1xn Are In Ap Then N Is
1) 5 2) 6 3) 7 4) 8 Answer: (3) n = 7 Solution: Coefficient of 5th, 6th, 7th term... View Article
The Number Of Arrangements That Can Be Made Out Of The Letter Of The Word Success
1) 60 2) 120 3) 360 4) 420 Answer: (3) 360 Solution: There are 7 letters in the words SUCCESS... View Article
How Many Different Nine Digit Numbers Can Be Formed From The Number 223355888
1) 16 2) 4 3) 60 4) 5 Answer: 60 Solution: In a nine digit number, we have four even... View Article
If Ncr Ncr1 And Npr Npr1 Then The Value Of N Is
If nCr = nCr-1 and nPr = nPr+1, then the value of n is: 1) 3 2) 4 3) 2... View Article
If an = ∑(1/nCr) for (n = 0→n) then ∑(r/nCr) for (n = 0→n) equals:
1) (n-1)an 2) nan 3) (n/2)an 4) None of these Answer: (3) (n/2)an Solution: \(\begin{array}{l}\text { Let } x=\sum_{r=0}^{n} \frac{r}{{... View Article
How Many Words Can Be Formed By Taking Four Different Letters Of The Word Mathematics
1) 756 2) 1680 3) 2454 4) 18 Answer: (3) 2454 Solution: There are 11 letters in total in word... View Article
Sum Of All Possible Numbers Greater Than 10000 Formed By Using The Digits From 13579 Is
1) 666600 2) 6666600 3) 66666600 4) None of these Answer: (2) 6666600 Solution: Total numbers that can be formed... View Article
N Books Are Arranged On A Shelf So That Two Particular Books Are Not Next To Each Other
1) 5 2) 6 3) 10 4) 8 Answer: (2) 6 Solution: Total number of arrangements of n books =... View Article
The Least Positive Integer N For Which N1c5 N1c6 Nc7 Is
The least positive integer n for which n-1C5 + n-1C6 < nC7 is? 1) 14 2) 15 3) 16 4)... View Article
Number Of Ways Of Selecting 10 Balls Out Of An Unlimited Number Of White Red Blue Green
1) 256 2) 286 3) 84 4) none of these Answer: (2) 286 Solution: We have four types of balls... View Article
The Total Number Of Positive Solutions Zero Included Of X Y Z W 20 Without Restrictions Is
1) 1771 2) 1558 3) 1328 4) none of these Answer: (1) 1771 Solution: Given, x+y+z+w = 20 20 is... View Article
How Many Integral Solutions Are There To Xyzt29 When X 1y 1z 3 And T 0
1) 29C3 2) 26C3 3) 23C3 4) 21C3 Answer: (3) 26C3 Solution: Given, x+y+z+t=29 and x,y,z,t are integers x≥1,y≥2,z≥3,t≥0 x−1≥0,y−2≥0,z−3≥0,t≥0... View Article
