Elitmus Exam Logical Reasoning

If square of (a-b) = 1, square of (a+b)=25. then the value of a and b
1. |a|>|b|
2. a=3
as per e-litmus (I don't remember it clearly)
a) only one is sufficient and other is not required
b) using any solution can be obtained
c) both statements are required
d) not any statement is sufficient
options:-
1. b 2. d 3. a 4. c

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Elitmus Other Question

This is a question of paragraph.
Calculus is the mathematical study of change, in the same way that geometry is the study of shape and algebra is the study of operations and their application to solving equations. It has two major branches, differential calculus (concerning rates of change and slopes of curves),[1] and integral calculus (concerning accumulation of quantities and the areas under and between curves);[2] these two branches are related to each other by the fundamental theorem of calculus. Both branches make use of the fundamental notions of convergence of infinite sequences and infinite series to a well-defined limit. Generally, modern calculus is considered to have been developed in the 17th century by Isaac Newton and Gottfried Leibniz. Today, calculus has widespread uses in science, engineering and economics[3] and can solve many problems that algebra alone cannot.

Calculus is a part of modern mathematics education. A course in calculus is a gateway to other, more advanced courses in mathematics devoted to the study of functions and limits, broadly called mathematical analysis. Calculus has historically been called "the calculus of infinitesimals", or "infinitesimal calculus". The word "calculus" comes from Latin (calculus) and refers to a small stone used for counting. More generally, calculus (plural calculi) refers to any method or system of calculation guided by the symbolic manipulation of expressions. Some examples of other well-known calculi are propositional calculus, calculus of variations, lambda calculus, and process calculus.
1. calculus, geometry and algebra study are related to respectively....
change, shape, operation
these three words are given in all the four options
2. two major branches of calculus are
options- propositional calculus, calculus of variations
lambda calculus, and process calculus.
differential calculus and integral calculus.
3. calculus fundamental notion is
one of the option- convergence of infinite sequences and infinite series to a well-defined limit.
4. calculus is used by human from .............. last years
options- 50, 400, 300, 1000



ABCD is a quadrilateral. then it's a parallelogram
1. angle ABC= 90
2. angle ADC=90
a) solve by any statement
b) solve only by one not by other
c) both required
d) not any is sufficient
options:-
1. a 2. b 3. c 4. d