<H2>Competitive reasoning-missing number-page4</h2>

 

31.  Find the missing number.

 

 

Answer  The pattern is:(a-b)^2=c (5-3)^2=4 (17-12)^2=25 (35-33)^2=X=4

 

32. Find the missing number.

 

 

Answer  The pattern is:In each quadrant of the circle (11+4)^2=225 (3+6)^2=81 (4+12)^2=256 (3+11)^2=Χ=196

33. Find the missing number

 

 

  Answer  The pattern is:18=9-4=23 27=12-3=36 So 16+15-10=X=21

 

34. Find the missing number.

 

 

  Answer  The pattern is: a^2-b^2=c 16^2-14^2=60 18^2-14^2=128 24^2-20^2=X=176

 

35. Find the missing number

 

 

Answer  The pattern is:If a,b,c are the numbers of a shape a+b+11=c 25+52+11=80 36+63+11=110 81+18+11=X=110

 

36. Find the missing number

 

 

  Answer  The pattern is:If a,b,c,d are the numbers of a column then a^2=c b^2=d 4^2=16 8^2=64 x^2=225 x=15

 

37. Find the missing number

 

 

  Answer  The pattern is:If a,b,c,d,e are the numbers of row then(a+b+c+d)^2-4=e (3+4+5+2)^2-4=196-4=192 (11+12+5+2)^2-4=X=896

38. Find the missing number

 

  Answer  The pattern isThe numbers are the cubes of 1,2,3,5,6,7,8,9 The cube of 4 is missing Χ=4^3=64:

 

39. Find the missing number

 

  Answer  The pattern is:The numbers are the perfect squares of 1,2,3,4,5,6,7,8 the 81 perfect square of 9 is missing 

 

40. Find the missing number

 

  Answer  The pattern is: 4=6=10 8+4=12 6+2=8 7+3=X=10

 

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