Statistics: Ch 8 Combinations and Permutations (5 of 22) General Counting Rules: Ex. 1

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We will find the total number of license plates possible if the license plates have 6 characters. First 3 characters are letter A-Z. Last 3 characters are numbers 0-9.

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[tempedits]

I am so glad I have come across with your channel. Eugyne, Brandon, Veritasium, among a few and great like yours.

[petereziagor]

I would appreciate to see how you would solve it using the formulas earlier

[gowrissshanker]

Respected sir, We calculate energy per unit volume of electric field of electromagnetic waves with
capacitor arrangement...I tried really hard to understand why do use, energy required to charge the capacitor and we divide by volume of capacitor to calculate energy per unit volume of electric field.... they say the energy is stored in electric field BUT the energy gained by an CHARGE Q in electric field depends on magnitude of Q; (ENERGY GAINED=Q×Electric field×Distance moved in E field;) then how can we predetermine the energy of
electric field per unit volume??(1/2)CV^2 and (1/2)Q^2/C...It's just the energy required to make the E
field in capacitor HOW CAN THIS BE EQUAL TO ENERGY GAINED BY AN CHARGE Q IN THAT FIELD?? CAN YOU EXPLAIN ENERGY PER UNIT VOLUME OF E AND B FIELD INTUITIVELY WHAT DO THEY MEAN??

[bobpeter]

Please sir, l don't understand why we used 26 and 10.

[Atrainn]

What if the letters and numbers are repeated like 5 4 5 S A S