Maths rocks is facebook page for promoting maths We had organised a quiz on the facebook page. Those who cant give the quiz or want to give quiz again can solve the questions here: 1. There will be 5 easy questions carrying 1 point each There will be 4 average questions carrying 2 points each There will be 6 tough ones carrying 3 points each. 2. Time limit easy 8 mins average 9min hard 10 min Maths rocks www. Facebook. Com/mathsrocks Some Important Instructions 1. NC0 , nC1 , nC2 ,…………. . NCn are represented by C0 , C1 , C2 , …………. Cn. 2. X^y means ‘x’ raise to the power ‘y’. 3. Arc sin
2^(n+1) - 1/(n+1)
4(5+n)+3(2-n)
2^(n+1)/(n+1)
4(5-n)+3(2+n)
438
351
117
108
90
180
Arctan(6)- arctan(1)
Arctan(12/root5)
3
4
2
8
117
554
531
553
0
12.6
-1
1
Pi/2 ln a
1
-1
Pi/4
Ln 2/3
Ln 2
2e/9 root 5
pi/3*(root3)
1
6 + ln2
Ln4 - 2
Log 2^-3
(pq-r)^2
Pq-r
0
1
5/81
1/8
137/735
5/648
2/3
Sqrt 3
0
1/3
63
25840
287
2994
[(2n-1)!]/[(n-1)!]^2
N(1+x)^(n-1)
(2n+1)C(n+1)/(n+2)
2n + 1
Pi/4
(n-2)*pi/8
Arc tan(n^2 + n +1) - pi/4
2pie