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HSPT Quantitative : How to work with number series

Study concepts, example questions & explanations for HSPT Quantitative

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All HSPT Quantitative Resources

6 Diagnostic Tests 55 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #141 : How To Work With Number Series

What number comes next in the series?

$47,\53,\59,\65,$ ___

Possible Answers:

Correct answer:

Explanation:

The values in the series increase by each time. The value for the blank can be calculated by adding to :

65+6=71

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Example Question #142 : How To Work With Number Series

Look at this series: 84, 96, 108, 120, . . .

What number should come next?

Possible Answers:

$\dpi{100} 132$

$\dpi{100} 124$

$\dpi{100} 126$

$\dpi{100} 128$

Correct answer:

$\dpi{100} 132$

Explanation:

Each term in this series is 12 bigger than the term before it. To find the next number add 12 to 120:

$\dpi{100} 120+12=132$

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Example Question #143 : How To Work With Number Series

Look at this series: 3, 6, 12, 24 . . .

What number should come next?

Possible Answers:

$\dpi{100} 48$

$\dpi{100} 36$

$\dpi{100} 24$

$\dpi{100} 32$

Correct answer:

$\dpi{100} 48$

Explanation:

Each number is double the value of the preceding number.

$\dpi{100} 2\times 24=48$

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Example Question #144 : How To Work With Number Series

Look at this series: 1, 8, 10, 17, . . .

What number should come next?

Possible Answers:

$\dpi{100} 18$

$\dpi{100} 21$

$\dpi{100} 19$

$\dpi{100} 26$

Correct answer:

$\dpi{100} 19$

Explanation:

The series increases by 7, then 2, then 7 again. So the next increase should continue the pattern and increase by 2.

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Example Question #145 : How To Work With Number Series

Look at this series: 4, 12, 9, 17, . . .

What number should come next?

Possible Answers:

$\dpi{100} 25$

$\dpi{100} 14$

$\dpi{100} 20$

$\dpi{100} 22$

Correct answer:

$\dpi{100} 14$

Explanation:

The number series increases by 8, then decreases by 3, then increases by 8 again. The 5th number should continue the pattern and be a decrease of 3. The answer is $\dpi{100} 17-3=14$ .

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Example Question #146 : How To Work With Number Series

What number should come next in this series?

17,24,31,38, ___

Possible Answers:

Correct answer:

Explanation:

The pattern is to add each time. The last operation is 38+7=45 .

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Example Question #147 : How To Work With Number Series

What number should come next in this series?

2041, 2004, 1967, 1930, ____

Possible Answers:

1897

1882

1893

1900

Correct answer:

1893

Explanation:

The pattern is to subtract each time. The last operation is 1930-37=1893 .

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Example Question #148 : How To Work With Number Series

What number should come next in this series?

.4,.2,.1,.05, ___

Possible Answers:

Correct answer:

Explanation:

The pattern is to divide by each time. The last operation is $.05\div2=.025$ .

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Example Question #149 : Number Series*

What number should come next in this series?

900,300,312,104, __

Possible Answers:

116

114

Correct answer:

116

Explanation:

The pattern is to add , then divide by . The last operation is 104+12=116 .

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Example Question #149 : How To Work With Number Series

What number should fill in the blank in this series?

15,27,39, ___ ,63

Possible Answers:

Correct answer:

Explanation:

The pattern is to add each time. Therefore the missing number is 39+12=51 .

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All HSPT Quantitative Resources

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HSPT Quantitative : How to work with number series

Study concepts, example questions & explanations for HSPT Quantitative

All HSPT Quantitative Resources

Example Questions

Example Question #141 : How To Work With Number Series

Example Question #142 : How To Work With Number Series

Example Question #143 : How To Work With Number Series

Example Question #144 : How To Work With Number Series

Example Question #145 : How To Work With Number Series

Example Question #146 : How To Work With Number Series

Example Question #147 : How To Work With Number Series

Example Question #148 : How To Work With Number Series

Example Question #149 : Number Series*

Example Question #149 : How To Work With Number Series

All HSPT Quantitative Resources

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