represents the unit digit of x. For instance, = 6. What is ?

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PS · Problem Solving

555-605

Exponents/Powers

$<x>$ represents the unit digit of x. For instance, $<456> = 6$ . What is $<5^{22}+5^{94}>$ ?

Answer Choices

Correct answer marked below

0

Correct

B

1

C

5

D

6

E

9

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Explanation

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Official Explanation

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To find the unit digit of

<5^{22}+5^{94}>

, we first observe the unit digit of powers of 5. The unit digit of any power of 5 is always 5. Therefore, the unit digit of…

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P

PrayashJul 8, 2024

Great question!

$<x>$ represents the unit digit of x. For instance, $<456> = 6$ . What is $<5^{22}+5^{94}>$ ?

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Official Explanation

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<x><x><x> represents the unit digit of x. For instance, <456>=6<456> = 6<456>=6. What is <522+594><5^{22}+5^{94}><522+594>?

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Official Explanation

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What it tests

Common trap

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$<x>$ represents the unit digit of x. For instance, $<456> = 6$ . What is $<5^{22}+5^{94}>$ ?