The given pattern is;
-2, 1, 4, 7
Here, the first number is -2, second number is 1
Difference between first and second number is 1 - (-2) = 3
Similary difference between 2 and 3 number is 4 - 1 =3
The difference between the third and fourth number is 7 -4 = 3
Thus, the pattern follows the difference between two successive number is 3
Fifth number = fourth number + 3
Fifth number = 7 + 3
Fifth number = 10
Answer : 10
