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Number - Factors and multiple

For GMAT
Number of Total Problems: 25.
FOR PRINT ::: (Book)

Problem Num : 21
Type:
Section:Number 
Theme:None
Adjustment# : 32
Difficulty: 1

Category Factors and multiple
Analysis 96=3*2^5

Solution/Answer

Answer: A



Problem Num : 22
Type:
Section:Number 
Theme:None
Adjustment# : 33
Difficulty: 1

Category Factors and multiple
Analysis Factorize 3150

Solution/Answer

Answer: E



Problem Num : 23
Type:
Section:Number 
Theme:None
Adjustment# : 43
Difficulty: 1

Category Factors and multiple
Analysis (10x+y)+(10y+x)=11(x+y)

Solution/Answer

Answer: A



Problem Num : 24
Type:
Section:Number 
Theme:None
Adjustment# : 50
Difficulty: 30

Category Factors and multiple
Analysis 15x+29y=440. 29y=5(88-3x) y should be multiple of 5. but less than 20.

Solution/Answer

Answer: A



Problem Num : 25
Type: Understanding
Section:Number 
Theme:None
Adjustment# : 60
Difficulty: 800 level

Category Factors and multiple
Analysis

Solution/Answer n=m*k? (1)3n=m*p (2)13n=m*q, m is less than 13 so that it can't be a multiple of 13, which means that q is a multiple of 13. Therefore, n is a multiple of m.

Answer: B



Array ( [0] => 4951 [1] => 4761 [2] => 4801 [3] => 4967 [4] => 4978 ) 251  2  3