Question Related to NTSE class X 5 Oct 2012

Question Related to NTSE class X
Good questions for all aspirants preparing for NTSE. 
Lets do them : 

Questions 1 to 4 

Question 5 : If the CP of 12 mobiles is equal to the SP of 16 mobiles.Find the loss percent
(a) 30 percent (b) 25 percent (c) 20 percent (d) 15 percent  
CP = cost price ; SP = selling price


Ans 5 (b) 25 percent


Question 6 : The smallest digit in the number 2_35600 to make it divisible by 3 is
(a) 3 (b) 2 (c) 0 (d) 5  

Ans 6 (b) 2


Question 7 : The only pair of consecutive prime numbers is _____ .

Ans 7 2 and 3


Question 8 : The year 1936 was a perfect square. Find the next such year  Ans 7 

(a) 2036 (b) 2025 (c) 2016 (d) 2000  

Ans 8 (b) 2025