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ISEE Lower Level Quantitative : How to find the missing part of a list

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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All ISEE Lower Level Quantitative Resources

20 Diagnostic Tests 114 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #11 : How To Find The Missing Part Of A List

What is the missing number in the following sequence:

$\displaystyle 45, 60, 75,...$

Possible Answers:

$\displaystyle 85$

$\displaystyle 80$

$\displaystyle 95$

$\displaystyle 90$

Correct answer:

$\displaystyle 90$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is greater than the number prior to it by a margin of $\displaystyle 15$ . Therefore, the missing number is $\displaystyle 90$ , because $\displaystyle 75 + 15= 90$

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Example Question #1632 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

Find the missing number in the sequence:

$\displaystyle 21, 23,...,35, 51$

Possible Answers:

$\displaystyle 30$

$\displaystyle 28$

$\displaystyle 33$

$\displaystyle 27$

Correct answer:

$\displaystyle 27$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is greater than the number prior to it by double the difference between the two previous numbers. $\displaystyle 23$ is greater than $\displaystyle 21$ by a difference of $\displaystyle 2$ , therefore the number that is missing must be greater than $\displaystyle 23$ by a margin of $\displaystyle 4$ . Thus, the correct answer is $\displaystyle 27$ . Notice that $\displaystyle 27$ is also less than $\displaystyle 35$ by a difference of $\displaystyle 8$

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Example Question #75 : Data Analysis And Probability

What is the missing number in the sequence:

$\displaystyle 19, 18, 16,...,4$

Possible Answers:

$\displaystyle 8$

$\displaystyle 12$

$\displaystyle 10$

$\displaystyle 14$

Correct answer:

$\displaystyle 12$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is less than the previous number by a difference that is double the margin between the previous two numbers. For example, the difference between $\displaystyle 19$ and $\displaystyle 18$ is $\displaystyle 1.$ And, the difference between $\displaystyle 18$ and $\displaystyle 16$ is $\displaystyle 2$ . Thus, the missing number must be less than $\displaystyle 16$ by a difference of $\displaystyle 4$ --which means that $\displaystyle 12$ is the missing number.

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Example Question #12 : How To Find The Missing Part Of A List

What is the next number:

$\displaystyle 125, 200, 275,...$

Possible Answers:

350 $\displaystyle 350$

375 $\displaystyle 375$

300 $\displaystyle 300$

325 $\displaystyle 325$

Correct answer:

350 $\displaystyle 350$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is greater than the number prior to it by a margin of 75. $\displaystyle 75.$ Thus, $\displaystyle 275 + 75 = 350$

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Example Question #13 : How To Find The Missing Part Of A List

Find the missing number in the list:

$\displaystyle 59, 52,..., 38, 31$

Possible Answers:

$\displaystyle 39$

$\displaystyle 45$

$\displaystyle 47$

$\displaystyle 49$

Correct answer:

$\displaystyle 45$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is less than the previous number in the sequence by a difference of $\displaystyle 7$ . Thus, $\displaystyle 52 - 7 = 45$ .

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Example Question #82 : Data Analysis And Probability

What is the missing number in the following sequence:

$\displaystyle 18, 24,..., 36, 42$

Possible Answers:

$\displaystyle 35$

$\displaystyle 30$

$\displaystyle 25$

$\displaystyle 32$

Correct answer:

$\displaystyle 30$

Explanation:

In this sequence of numbers, there is an important pattern to recognize. Each number is greater than the number prior to it by a margin of $\displaystyle 6$ . In other words, each number in this list is a multiple of $\displaystyle 6$ . $6 \cdot 3= 18$ $\displaystyle 6 \cdot 3= 18$ , $6 \cdot 4= 24$ $\displaystyle 6 \cdot 4= 24$ , thus the next number in this sequence is the product of $6 \cdot 5$ $\displaystyle 6 \cdot 5$ which equals $\displaystyle 30$ .

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Example Question #32 : Data Analysis

What is the missing value of $\displaystyle w$ in this sequence?

$\displaystyle 92, 85, 78, 71, w$

Possible Answers:

$\displaystyle 60$

$\displaystyle 64$

$\displaystyle 68$

$\displaystyle 66$

$\displaystyle 59$

Correct answer:

$\displaystyle 64$

Explanation:

In this sequence, every subsequent number is $\displaystyle 7$ less than the preceding number. Given that the number that precedes $\displaystyle w$ is $\displaystyle 71$ , the value of w is 71-7=64 $\displaystyle 71-7=64$ . Therefore, $\displaystyle 64$ is the correct answer.

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All ISEE Lower Level Quantitative Resources

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ISEE Lower Level Quantitative : How to find the missing part of a list

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

All ISEE Lower Level Quantitative Resources

Example Questions

Example Question #11 : How To Find The Missing Part Of A List

Example Question #1632 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

Example Question #75 : Data Analysis And Probability

Example Question #12 : How To Find The Missing Part Of A List

Example Question #13 : How To Find The Missing Part Of A List

Example Question #82 : Data Analysis And Probability

Example Question #32 : Data Analysis

All ISEE Lower Level Quantitative Resources

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