1.Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?
12
14
27
53
Explanation:
In this series, each number is repeated, then 13 is subtracted to arrive at the next number.
package B14;
public class num00 {
public static void main(String[] args) {
int no = 53;
int count = 0;
while (count < 10) {
System.out.println(no);
System.out.println(no);
no = no - 13;
count = count + 2;
}
}
}
Output:
53
53
40
40
27
27
14
14
1
1
2.Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?
22
24
25
26
Explanation:
In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.
package B14;
public class num11 {
public static void main(String[] args) {
int no = 22;
int count = 0;
while (count < 2) {
System.out.println(no);
no = no - 1;
System.out.println(no);
no = no + 2;
count = count + 1;
}
}
}
Output:
22
21
23
22
24
23
25
24
26
25
27
26
.
3.Look at this series: 36, 34, 30, 28, 24, ... What number should come next?
20
22
23
26
Explanation:
This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.
package B14;
public class num22 {
public static void main(String[] args) {
int no=36;
int count = 0;
while(count<5)
{
System.out.println(no);
no=no-2;
System.out.println(no);
no=no-4;
count=count+2;
}
}
}
Output:
36
34
30
28
24
22
4.Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?
14
15
21
23
Explanation:
In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.
package B14;
public class num23 {
public static void main(String[] args) {
int num1 = 21;
int num = 9;
int count = 0;
while (count < 6) {
System.out.println(num1);
System.out.println(num);
num = num + 2;
count = count + 1;
}
}
}
output:
9
21
11
21
13
21
15
21
17
21
19
5.Look at this series: 58, 52, 46, 40, 34, ... What number should come next?
26
28
30
32
Explanation:
This is a simple subtraction series. Each number is 6 less than the previous number.
package B14;
public class num24 {
public static void main(String[] args) {
int num = 58;
int count = 0;
while (count < 6) {
System.out.println(num);
num = num - 6;
count++;
}
}
}
Output:
58
52
46
40
34
28
6.Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?
7
10
14
15
Explanation:
This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.
package B14;
public class num25 {
public static void main(String[] args) {
int num = 3;
int count = 0;
while (count < 6) {
System.out.println(num);
num = num + 1;
System.out.println(num);
num = num + 3;
count = count + 1;
}
}
}
Output:
3
4
7
8
11
12
15
16
19
20
23
24
7.Look at this series: 31, 29, 24, 22, 17, ... What number should come next?
15
14
13
12
Explanation:
This is a simple alternating subtraction series, which subtracts 2, then 5.
package B14;
public class num26 {
public static void main(String[] args) {
int num = 31;
int count = 0;
while (count < 5) {
System.out.println(num);
num = num - 2;
System.out.println(num);
num = num - 5;
count = count + 1;
}
}
}
output:
31
29
24
22
17
15
10
8
3
1
8.Look at this series: 1.5, 2.3, 3.1, 3.9, ... What number should come next?
4.2
4.4
4.7
5.1
Explanation:
In this simple addition series, each number increases by 0.8.
package B14;
public class num27 {
public static void main(String[] args) {
double num = 1.5;
int count = 0;
while (count < 6) {
System.out.println(num);
num = num + 0.8;
count++;
}
}
}
**
output:**
1.5
2.3
3.0999999999999996
3.8999999999999995
4.699999999999999
5.499999999999999
**
9.Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next?
52
56
96
128
Explanation:**
This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8.
package B14;
public class num28 {
public static void main(String[] args) {
int num = 14;
int count = 0;
while (count < 4) {
System.out.println(num);
num = num * 2;
System.out.println(num);
num = num - 8;
count = count + 1;
}
}
}
Output:
14
28
20
40
32
64
56
112
10.Look at this series: 5.2, 4.8, 4.4, 4, ... What number should come next?
3
3.3
3.5
3.6
Explanation:
In this simple subtraction series, each number decreases by 0.4.
package B14;
public class num29 {
public static void main(String[] args) {
double num = 5.2;
int count = 0;
while (count < 6) {
System.out.println(num);
num = num - 0.4;
count++;
}
}
}
Output:
5.2
4.8
4.3999999999999995
3.9999999999999996
3.5999999999999996
3.1999999999999997
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