Which of the following statements is true? 1. Computers have only been around since the 1940's
II. One reason computers were first developed was to do mathematical computations faster
III. Some modern computers include laptops, cell phones, and tablets
IV. Computers are able to perform tasks by using logic

all answers are true

Explanation: the first computer was made in 1943, Early computers were only conceived as calculating devices. Since ancient times, simple manual devices like the abacus aided people in doing calculations. Early in the Industrial Revolution, some mechanical devices were built to automate long tedious tasks, such as guiding patterns for looms, and no. 3 is true, with well, real world knowledge

The correct answer is II, III, and IV.

Explanation: The correct answer is 2,3,4. Number 1 is wrong because computers were made in 4000BC. II is right because since the beginning of time. Hand made computers were used more as of caculators. III is right because laptops, cell phones, tablets and even toys all have digital coding that originated since 1940 when the first digital computer was made. IV is right partially. Computers do certain tasks set by humans and use's logic to complete them. (Depends). II, III, IV, are the correct answers