ALL ANSWERS · MIXED · DAILY No. 31 · OCTOBER 4, 2026
Size It Up answer: October 4
The five Mixed silhouettes for October 4, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 31 ran from a freshwater shrimp (1.5 cm) to the Eiffel Tower (330 m). The widest gap was round 2, CH-47 Chinook against Elasmosaurus, at 2.9×; the closest call was round 3, African Elephant against Wandering Albatross, only 1.0× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
You have not finished today’s puzzle on this device. The answers below are blurred so you can still play first.
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ROUND 1
Freshwater Shrimp (adult) vs Guppy (adult female)
Guppy · reference · 3.5 cm Freshwater Shrimp · true length · 1.5 cm 2.3× shorter than the guppy
A freshwater shrimp is about 15 mm long and swims on its side in clean streams.
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ROUND 2
CH-47 Chinook (including rotors) vs Elasmosaurus
Elasmosaurus · reference · 10.3 m CH-47 Chinook · true length · 30.14 m 2.9× longer than the elasmosaurus
The Chinook spans 30.14 m with its tandem rotors operating. Measuring just the fuselage would miss nearly half of that.
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ROUND 3
African Elephant (Bull) vs Wandering Albatross
Wandering Albatross · reference · 3.1 m African Elephant · true height · 3.2 m 1.0× taller than the wandering albatross
A bull African elephant stands about 3.2 m at the shoulder.
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ROUND 4
Tower Bridge (total length) vs Eiffel Tower (to the tip)
Eiffel Tower · reference · 330 m Tower Bridge · true length · 286 m 1.2× shorter than the Eiffel Tower
Tower Bridge is about 286 m long including its abutments; each tower rises 65 m.
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ROUND 5
House Sparrow vs Sheet of A3 Paper (ISO 216)
Sheet of A3 Paper · reference · 42 cm House Sparrow · true length · 16 cm 2.6× shorter than the sheet of A3 paper
A house sparrow is about 16 cm long — the length of a pencil.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.